38921519824 has 20 divisors (see below), whose sum is σ = 82265940000. Its totient is φ = 17691599840.

The previous prime is 38921519803. The next prime is 38921519827. The reversal of 38921519824 is 42891512983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38921519827) 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 3 ways as a sum of consecutive naturals, for example, 110572324 + ... + 110572675.

It is an arithmetic number, because the mean of its divisors is an integer number (4113297000).

Almost surely, 2^38921519824 is an apocalyptic number.

It is an amenable number.

38921519824 is an abundant number, since it is smaller than the sum of its proper divisors (43344420176).

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

38921519824 is a wasteful number, since it uses less digits than its factorization.

38921519824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221145018 (or 221145012 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The spelling of 38921519824 in words is "thirty-eight billion, nine hundred twenty-one million, five hundred nineteen thousand, eight hundred twenty-four".