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1807045180 = 225312149631
BaseRepresentation
bin110101110110101…
…0101001000111100
311122221021101222021
41223231111020330
512200100421210
6455151125524
762531426203
oct15355251074
94587241867
101807045180
11848036876
124252138a4
1322a4b8a05
14131dcc23a
15a899abda
hex6bb5523c

1807045180 has 72 divisors (see below), whose sum is σ = 3953728800. Its totient is φ = 693705600.

The previous prime is 1807045169. The next prime is 1807045189. The reversal of 1807045180 is 815407081.

It is a super-2 number, since 2×18070451802 = 6530824565122464800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1807045189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2863465 + ... + 2864095.

It is an arithmetic number, because the mean of its divisors is an integer number (54912900).

Almost surely, 21807045180 is an apocalyptic number.

1807045180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1807045180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1976864400).

1807045180 is an abundant number, since it is smaller than the sum of its proper divisors (2146683620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1807045180 is a wasteful number, since it uses less digits than its factorization.

1807045180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 1807045180 is about 42509.3540294369. The cubic root of 1807045180 is about 1218.0253777822.

The spelling of 1807045180 in words is "one billion, eight hundred seven million, forty-five thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 31 62 124 149 155 298 310 596 620 631 745 961 1262 1490 1922 2524 2980 3155 3844 4619 4805 6310 9238 9610 12620 18476 19220 19561 23095 39122 46190 78244 92380 94019 97805 143189 188038 195610 286378 376076 391220 470095 572756 606391 715945 940190 1212782 1431890 1880380 2425564 2863780 2914589 3031955 5829178 6063910 11658356 12127820 14572945 29145890 58291780 90352259 180704518 361409036 451761295 903522590 1807045180