18064071 has 24 divisors (see below), whose sum is σ = 27421680. Its totient is φ = 11442816.

The previous prime is 18064049. The next prime is 18064073. The reversal of 18064071 is 17046081.

It is a happy number.

18064071 is a `hidden beast` number, since 18 + 0 + 640 + 7 + 1 = 666.

It is not a de Polignac number, because 18064071 - 2⁷ = 18063943 is a prime.

It is a super-2 number, since 2×18064071² = 652621322186082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18064073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16971 + ... + 18003.

It is an arithmetic number, because the mean of its divisors is an integer number (1142570).

Almost surely, 2^18064071 is an apocalyptic number.

18064071 is a deficient number, since it is larger than the sum of its proper divisors (9357609).

18064071 is a wasteful number, since it uses less digits than its factorization.

18064071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18064071 is about 4250.1848195108. The cubic root of 18064071 is about 262.3847221718.

The spelling of 18064071 in words is "eighteen million, sixty-four thousand, seventy-one".