18112365 has 24 divisors (see below), whose sum is σ = 32163768. Its totient is φ = 9423360.

The previous prime is 18112349. The next prime is 18112387. The reversal of 18112365 is 56321181.

It can be written as a sum of positive squares in 4 ways, for example, as 2643876 + 15468489 = 1626^2 + 3933^2 .

It is not a de Polignac number, because 18112365 - 2⁴ = 18112349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3064 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (1340157).

Almost surely, 2^18112365 is an apocalyptic number.

18112365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18112365 is a deficient number, since it is larger than the sum of its proper divisors (14051403).

18112365 is a wasteful number, since it uses less digits than its factorization.

18112365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9869 (or 9866 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 18112365 is about 4255.8624272878. The cubic root of 18112365 is about 262.6183411988.

The spelling of 18112365 in words is "eighteen million, one hundred twelve thousand, three hundred sixty-five".