38492821940 has 24 divisors (see below), whose sum is σ = 80840025000. Its totient is φ = 15396157568.

The previous prime is 38492821903. The next prime is 38492821957. The reversal of 38492821940 is 4912829483.

It can be written as a sum of positive squares in 4 ways, for example, as 7198504336 + 31294317604 = 84844^2 + 176902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323654 + ... + 426306.

It is an arithmetic number, because the mean of its divisors is an integer number (3368334375).

Almost surely, 2^38492821940 is an apocalyptic number.

It is an amenable number.

38492821940 is an abundant number, since it is smaller than the sum of its proper divisors (42347203060).

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

38492821940 is a wasteful number, since it uses less digits than its factorization.

38492821940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121411 (or 121409 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 38492821940 in words is "thirty-eight billion, four hundred ninety-two million, eight hundred twenty-one thousand, nine hundred forty".