30912190839 has 32 divisors (see below), whose sum is σ = 48527424000. Its totient is φ = 19380799872.

The previous prime is 30912190819. The next prime is 30912190867. The reversal of 30912190839 is 93809121903.

It is a happy number.

It is not a de Polignac number, because 30912190839 - 2⁹ = 30912190327 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30912190794 and 30912190803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30912190819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579892 + ... + 630950.

It is an arithmetic number, because the mean of its divisors is an integer number (1516482000).

Almost surely, 2^30912190839 is an apocalyptic number.

30912190839 is a deficient number, since it is larger than the sum of its proper divisors (17615233161).

30912190839 is a wasteful number, since it uses less digits than its factorization.

30912190839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52404 (or 52398 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 30912190839 in words is "thirty billion, nine hundred twelve million, one hundred ninety thousand, eight hundred thirty-nine".