18224951800 has 48 divisors (see below), whose sum is σ = 46225110600. Its totient is φ = 6627254400.

The previous prime is 18224951783. The next prime is 18224951819. The reversal of 18224951800 is 815942281.

It is a super-2 number, since 2×18224951800² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4139835 + ... + 4144234.

Almost surely, 2^18224951800 is an apocalyptic number.

18224951800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18224951800 is an abundant number, since it is smaller than the sum of its proper divisors (28000158800).

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

18224951800 is a wasteful number, since it uses less digits than its factorization.

18224951800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284096 (or 8284087 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 18224951800 in words is "eighteen billion, two hundred twenty-four million, nine hundred fifty-one thousand, eight hundred".