18036765 has 24 divisors (see below), whose sum is σ = 31468320. Its totient is φ = 9556704.

The previous prime is 18036751. The next prime is 18036791. The reversal of 18036765 is 56763081.

It is not a de Polignac number, because 18036765 - 2⁸ = 18036509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6106 + ... + 8564.

It is an arithmetic number, because the mean of its divisors is an integer number (1311180).

Almost surely, 2^18036765 is an apocalyptic number.

18036765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18036765 is a deficient number, since it is larger than the sum of its proper divisors (13431555).

18036765 is a wasteful number, since it uses less digits than its factorization.

18036765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 18036765 is about 4246.9712737432. The cubic root of 18036765 is about 262.2524468882.

The spelling of 18036765 in words is "eighteen million, thirty-six thousand, seven hundred sixty-five".