18315112 has 16 divisors (see below), whose sum is σ = 34755840. Its totient is φ = 9046896.

The previous prime is 18315091. The next prime is 18315113. The reversal of 18315112 is 21151381.

It is not an unprimeable number, because it can be changed into a prime (18315113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13128 + ... + 14455.

It is an arithmetic number, because the mean of its divisors is an integer number (2172240).

Almost surely, 2^18315112 is an apocalyptic number.

It is an amenable number.

18315112 is a deficient number, since it is larger than the sum of its proper divisors (16440728).

18315112 is a wasteful number, since it uses less digits than its factorization.

18315112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27672 (or 27668 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 18315112 is about 4279.6158706127. The cubic root of 18315112 is about 263.5946104453.

Adding to 18315112 its reverse (21151381), we get a palindrome (39466493).

The spelling of 18315112 in words is "eighteen million, three hundred fifteen thousand, one hundred twelve".