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1830979080 = 233457219607
BaseRepresentation
bin110110100100010…
…1000011000001000
311201121022101010000
41231020220120020
512222212312310
6501404123000
763242031300
oct15510503010
94647271100
101830979080
1185a5a3757
12431236460
13232448898
1413525c600
15aab274c0
hex6d228608

1830979080 has 480 divisors, whose sum is σ = 7548076800. Its totient is φ = 395829504.

The previous prime is 1830979079. The next prime is 1830979093. The reversal of 1830979080 is 809790381.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3016137 + ... + 3016743.

It is an arithmetic number, because the mean of its divisors is an integer number (15725160).

Almost surely, 21830979080 is an apocalyptic number.

1830979080 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 1830979080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3774038400).

1830979080 is an abundant number, since it is smaller than the sum of its proper divisors (5717097720).

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

1830979080 is a wasteful number, since it uses less digits than its factorization.

1830979080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1830979080 is about 42789.9413413947. The cubic root of 1830979080 is about 1223.3792989004.

The spelling of 1830979080 in words is "one billion, eight hundred thirty million, nine hundred seventy-nine thousand, eighty".