38909783512 has 32 divisors (see below), whose sum is σ = 73457334720. Its totient is φ = 19321286400.

The previous prime is 38909783489. The next prime is 38909783557. The reversal of 38909783512 is 21538790983.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2946268 + ... + 2959444.

It is an arithmetic number, because the mean of its divisors is an integer number (2295541710).

Almost surely, 2^38909783512 is an apocalyptic number.

It is an amenable number.

38909783512 is a deficient number, since it is larger than the sum of its proper divisors (34547551208).

38909783512 is a wasteful number, since it uses less digits than its factorization.

38909783512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15691 (or 15687 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 38909783512 in words is "thirty-eight billion, nine hundred nine million, seven hundred eighty-three thousand, five hundred twelve".