18136065 has 16 divisors (see below), whose sum is σ = 29307456. Its totient is φ = 9576000.

The previous prime is 18136061. The next prime is 18136073. The reversal of 18136065 is 56063181.

It is not a de Polignac number, because 18136065 - 2² = 18136061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18136061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4471 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (1831716).

Almost surely, 2^18136065 is an apocalyptic number.

18136065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18136065 is a deficient number, since it is larger than the sum of its proper divisors (11171391).

18136065 is a wasteful number, since it uses less digits than its factorization.

18136065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12080.

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

The square root of 18136065 is about 4258.6459115545. The cubic root of 18136065 is about 262.7328364978.

The spelling of 18136065 in words is "eighteen million, one hundred thirty-six thousand, sixty-five".