38407820818 has 8 divisors (see below), whose sum is σ = 57732007680. Its totient is φ = 19163818260.

The previous prime is 38407820783. The next prime is 38407820821. The reversal of 38407820818 is 81802870483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20044878 + ... + 20046793.

It is an arithmetic number, because the mean of its divisors is an integer number (7216500960).

Almost surely, 2^38407820818 is an apocalyptic number.

38407820818 is a deficient number, since it is larger than the sum of its proper divisors (19324186862).

38407820818 is a wasteful number, since it uses less digits than its factorization.

38407820818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40092152.

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 38407820818 in words is "thirty-eight billion, four hundred seven million, eight hundred twenty thousand, eight hundred eighteen".