38956772490 has 32 divisors (see below), whose sum is σ = 93559919616. Its totient is φ = 10381398720.

The previous prime is 38956772443. The next prime is 38956772551. The reversal of 38956772490 is 9427765983.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397257 + ... + 485516.

It is an arithmetic number, because the mean of its divisors is an integer number (2923747488).

Almost surely, 2^38956772490 is an apocalyptic number.

38956772490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38956772490 is an abundant number, since it is smaller than the sum of its proper divisors (54603147126).

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

38956772490 is a wasteful number, since it uses less digits than its factorization.

38956772490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884254.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 38956772490 in words is "thirty-eight billion, nine hundred fifty-six million, seven hundred seventy-two thousand, four hundred ninety".