30957902181 has 24 divisors (see below), whose sum is σ = 46672080000. Its totient is φ = 19736662176.

The previous prime is 30957902177. The next prime is 30957902191. The reversal of 30957902181 is 18120975903.

It is not a de Polignac number, because 30957902181 - 2² = 30957902177 is a prime.

It is a super-2 number, since 2×30957902181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30957902191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1019835 + ... + 1049751.

It is an arithmetic number, because the mean of its divisors is an integer number (1944670000).

Almost surely, 2^30957902181 is an apocalyptic number.

It is an amenable number.

30957902181 is a deficient number, since it is larger than the sum of its proper divisors (15714177819).

30957902181 is a wasteful number, since it uses less digits than its factorization.

30957902181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34945 (or 34942 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 30957902181 in words is "thirty billion, nine hundred fifty-seven million, nine hundred two thousand, one hundred eighty-one".