30926972618 has 32 divisors (see below), whose sum is σ = 48952055808. Its totient is φ = 14632416000.

The previous prime is 30926972617. The next prime is 30926972623. The reversal of 30926972618 is 81627962903.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30926972618.

It is not an unprimeable number, because it can be changed into a prime (30926972617) 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 15 ways as a sum of consecutive naturals, for example, 3495296 + ... + 3504132.

It is an arithmetic number, because the mean of its divisors is an integer number (1529751744).

Almost surely, 2^30926972618 is an apocalyptic number.

30926972618 is a deficient number, since it is larger than the sum of its proper divisors (18025083190).

30926972618 is a wasteful number, since it uses less digits than its factorization.

30926972618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10118.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 30926972618 in words is "thirty billion, nine hundred twenty-six million, nine hundred seventy-two thousand, six hundred eighteen".