819479700944 has 40 divisors (see below), whose sum is σ = 1694201951040. Its totient is φ = 382857124608.

The previous prime is 819479700931. The next prime is 819479700961. The reversal of 819479700944 is 449007974918.

It is a super-2 number, since 2×819479700944² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18441212 + ... + 18485595.

It is an arithmetic number, because the mean of its divisors is an integer number (42355048776).

Almost surely, 2^819479700944 is an apocalyptic number.

It is an amenable number.

819479700944 is an abundant number, since it is smaller than the sum of its proper divisors (874722250096).

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

819479700944 is a wasteful number, since it uses less digits than its factorization.

819479700944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36926907 (or 36926901 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 819479700944 in words is "eight hundred nineteen billion, four hundred seventy-nine million, seven hundred thousand, nine hundred forty-four".