38919946040 has 16 divisors (see below), whose sum is σ = 87569878680. Its totient is φ = 15567978400.

The previous prime is 38919946033. The next prime is 38919946049. The reversal of 38919946040 is 4064991983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38919946049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486499286 + ... + 486499365.

Almost surely, 2^38919946040 is an apocalyptic number.

It is an amenable number.

38919946040 is an abundant number, since it is smaller than the sum of its proper divisors (48649932640).

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

38919946040 is a wasteful number, since it uses less digits than its factorization.

38919946040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972998662 (or 972998658 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 38919946040 in words is "thirty-eight billion, nine hundred nineteen million, nine hundred forty-six thousand, forty".