18101819112 has 32 divisors (see below), whose sum is σ = 48735667680. Its totient is φ = 5569790400.

The previous prime is 18101819101. The next prime is 18101819117. The reversal of 18101819112 is 21191810181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18101819117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29009014 + ... + 29009637.

It is an arithmetic number, because the mean of its divisors is an integer number (1522989615).

Almost surely, 2^18101819112 is an apocalyptic number.

18101819112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18101819112 is an abundant number, since it is smaller than the sum of its proper divisors (30633848568).

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

18101819112 is a wasteful number, since it uses less digits than its factorization.

18101819112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58018673 (or 58018669 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 33.

The spelling of 18101819112 in words is "eighteen billion, one hundred one million, eight hundred nineteen thousand, one hundred twelve".