18211940300 has 18 divisors (see below), whose sum is σ = 39519910668. Its totient is φ = 7284776080.

The previous prime is 18211940291. The next prime is 18211940321. The reversal of 18211940300 is 304911281.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91059602 + ... + 91059801.

Almost surely, 2^18211940300 is an apocalyptic number.

18211940300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18211940300 is an abundant number, since it is smaller than the sum of its proper divisors (21307970368).

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

18211940300 is a wasteful number, since it uses less digits than its factorization.

18211940300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182119417 (or 182119410 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 18211940300 in words is "eighteen billion, two hundred eleven million, nine hundred forty thousand, three hundred".