18065136 has 40 divisors (see below), whose sum is σ = 46839760. Its totient is φ = 5999616.

The previous prime is 18065111. The next prime is 18065137. The reversal of 18065136 is 63156081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065137) 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, 17400 + ... + 18408.

It is an arithmetic number, because the mean of its divisors is an integer number (1170994).

Almost surely, 2^18065136 is an apocalyptic number.

18065136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18065136 is an abundant number, since it is smaller than the sum of its proper divisors (28774624).

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

18065136 is a wasteful number, since it uses less digits than its factorization.

18065136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 18065136 is about 4250.3101063334. The cubic root of 18065136 is about 262.3898785259.

The spelling of 18065136 in words is "eighteen million, sixty-five thousand, one hundred thirty-six".