18072065 has 16 divisors (see below), whose sum is σ = 23742720. Its totient is φ = 13096320.

The previous prime is 18072053. The next prime is 18072077. The reversal of 18072065 is 56027081.

It is an interprime number because it is at equal distance from previous prime (18072053) and next prime (18072077).

It is not a de Polignac number, because 18072065 - 2⁴ = 18072049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24776 + ... + 25494.

It is an arithmetic number, because the mean of its divisors is an integer number (1483920).

Almost surely, 2^18072065 is an apocalyptic number.

It is an amenable number.

18072065 is a deficient number, since it is larger than the sum of its proper divisors (5670655).

18072065 is a wasteful number, since it uses less digits than its factorization.

18072065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 18072065 is about 4251.1251451822. The cubic root of 18072065 is about 262.4234213506.

The spelling of 18072065 in words is "eighteen million, seventy-two thousand, sixty-five".