18928000408 has 32 divisors (see below), whose sum is σ = 36395116560. Its totient is φ = 9223603200.

The previous prime is 18928000387. The next prime is 18928000417. The reversal of 18928000408 is 80400082981.

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, 97008 + ... + 217408.

Almost surely, 2^18928000408 is an apocalyptic number.

It is an amenable number.

18928000408 is a deficient number, since it is larger than the sum of its proper divisors (17467116152).

18928000408 is a wasteful number, since it uses less digits than its factorization.

18928000408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120907 (or 120903 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The spelling of 18928000408 in words is "eighteen billion, nine hundred twenty-eight million, four hundred eight", and thus it is an aban number.