18053765 has 16 divisors (see below), whose sum is σ = 22372416. Its totient is φ = 13977600.

The previous prime is 18053731. The next prime is 18053767. The reversal of 18053765 is 56735081.

It is not a de Polignac number, because 18053765 - 2⁶ = 18053701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053767) 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, 27845 + ... + 28485.

It is an arithmetic number, because the mean of its divisors is an integer number (1398276).

Almost surely, 2^18053765 is an apocalyptic number.

It is an amenable number.

18053765 is a deficient number, since it is larger than the sum of its proper divisors (4318651).

18053765 is a wasteful number, since it uses less digits than its factorization.

18053765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 18053765 is about 4248.9722286690. The cubic root of 18053765 is about 262.3348136847.

The spelling of 18053765 in words is "eighteen million, fifty-three thousand, seven hundred sixty-five".