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2180401941 = 31339754251
BaseRepresentation
bin1000000111110110…
…0100101100010101
312121221210220011110
42001331210230111
513431140330231
61000205325233
7105014052654
oct20175445425
95557726143
102180401941
11a19864283
1250a266819
1328995c183
1416981919b
15cb64a046
hex81f64b15

2180401941 has 8 divisors (see below), whose sum is σ = 2907473184. Its totient is φ = 1453466000.

The previous prime is 2180401931. The next prime is 2180401961. The reversal of 2180401941 is 1491040812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2180401941 - 213 = 2180393749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2180401899 and 2180401908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180401931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13066 + ... + 67316.

It is an arithmetic number, because the mean of its divisors is an integer number (363434148).

Almost surely, 22180401941 is an apocalyptic number.

It is an amenable number.

2180401941 is a deficient number, since it is larger than the sum of its proper divisors (727071243).

2180401941 is a wasteful number, since it uses less digits than its factorization.

2180401941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67651.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 2180401941 is about 46694.7742365246. The cubic root of 2180401941 is about 1296.7179419972.

The spelling of 2180401941 in words is "two billion, one hundred eighty million, four hundred one thousand, nine hundred forty-one".

Divisors: 1 3 13397 40191 54251 162753 726800647 2180401941