18391228300 has 36 divisors (see below), whose sum is σ = 39932905936. Its totient is φ = 7352078400.

The previous prime is 18391228279. The next prime is 18391228301. The reversal of 18391228300 is 382219381.

It is a self number, because there is not a number n which added to its sum of digits gives 18391228300.

It is not an unprimeable number, because it can be changed into a prime (18391228301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114985 + ... + 223615.

Almost surely, 2^18391228300 is an apocalyptic number.

18391228300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18391228300 is an abundant number, since it is smaller than the sum of its proper divisors (21541677636).

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

18391228300 is a wasteful number, since it uses less digits than its factorization.

18391228300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110338 (or 110331 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

It can be divided in two parts, 183912 and 28300, that added together give a palindrome (212212).

The spelling of 18391228300 in words is "eighteen billion, three hundred ninety-one million, two hundred twenty-eight thousand, three hundred".