904919986938 has 24 divisors (see below), whose sum is σ = 1989328237344. Its totient is φ = 274218177640.

The previous prime is 904919986933. The next prime is 904919986963. The reversal of 904919986938 is 839689919409.

It is a self number, because there is not a number n which added to its sum of digits gives 904919986938.

It is not an unprimeable number, because it can be changed into a prime (904919986933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623222406 + ... + 623223857.

It is an arithmetic number, because the mean of its divisors is an integer number (82888676556).

Almost surely, 2^904919986938 is an apocalyptic number.

904919986938 is an abundant number, since it is smaller than the sum of its proper divisors (1084408250406).

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

904919986938 is a wasteful number, since it uses less digits than its factorization.

904919986938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246446290 (or 1246446279 counting only the distinct ones).

The product of its (nonzero) digits is 272097792, while the sum is 75.

The spelling of 904919986938 in words is "nine hundred four billion, nine hundred nineteen million, nine hundred eighty-six thousand, nine hundred thirty-eight".