18291101112 has 48 divisors (see below), whose sum is σ = 49717292040. Its totient is φ = 6075016128.

The previous prime is 18291101099. The next prime is 18291101161. The reversal of 18291101112 is 21110119281.

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, 438618 + ... + 478505.

Almost surely, 2^18291101112 is an apocalyptic number.

18291101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18291101112 is an abundant number, since it is smaller than the sum of its proper divisors (31426190928).

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

18291101112 is a wasteful number, since it uses less digits than its factorization.

18291101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917412 (or 917405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

The spelling of 18291101112 in words is "eighteen billion, two hundred ninety-one million, one hundred one thousand, one hundred twelve".