18914238900 has 108 divisors (see below), whose sum is σ = 60731740524. Its totient is φ = 4920768000.

The previous prime is 18914238887. The next prime is 18914238911. The reversal of 18914238900 is 983241981.

It can be written as a sum of positive squares in 6 ways, for example, as 1665619344 + 17248619556 = 40812^2 + 131334^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 219391 + ... + 293190.

Almost surely, 2^18914238900 is an apocalyptic number.

18914238900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18914238900 is an abundant number, since it is smaller than the sum of its proper divisors (41817501624).

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

18914238900 is a wasteful number, since it uses less digits than its factorization.

18914238900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512642 (or 512632 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 18914238900 in words is "eighteen billion, nine hundred fourteen million, two hundred thirty-eight thousand, nine hundred".