18165007 has 16 divisors (see below), whose sum is σ = 22220800. Its totient is φ = 14502240.

The previous prime is 18165001. The next prime is 18165011. The reversal of 18165007 is 70056181.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18165007 - 2³ = 18164999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18165001) 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, 6994 + ... + 9232.

It is an arithmetic number, because the mean of its divisors is an integer number (1388800).

Almost surely, 2^18165007 is an apocalyptic number.

18165007 is a deficient number, since it is larger than the sum of its proper divisors (4055793).

18165007 is a wasteful number, since it uses less digits than its factorization.

18165007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 18165007 is about 4262.0425854278. The cubic root of 18165007 is about 262.8725208310.

It can be divided in two parts, 18 and 165007, that added together give a triangular number (165025 = T₅₇₄).

The spelling of 18165007 in words is "eighteen million, one hundred sixty-five thousand, seven".