18836426400 has 144 divisors (see below), whose sum is σ = 66886531488. Its totient is φ = 4566400000.

The previous prime is 18836426369. The next prime is 18836426423. The reversal of 18836426400 is 462463881.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330351 + ... + 383150.

It is an arithmetic number, because the mean of its divisors is an integer number (464489802).

Almost surely, 2^18836426400 is an apocalyptic number.

18836426400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18836426400 is an abundant number, since it is smaller than the sum of its proper divisors (48050105088).

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

18836426400 is a wasteful number, since it uses less digits than its factorization.

18836426400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713535 (or 713522 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 18836426400 in words is "eighteen billion, eight hundred thirty-six million, four hundred twenty-six thousand, four hundred".