18064395 has 24 divisors (see below), whose sum is σ = 32078592. Its totient is φ = 9398400.

The previous prime is 18064379. The next prime is 18064427. The reversal of 18064395 is 59346081.

18064395 is a `hidden beast` number, since 1 + 8 + 0 + 643 + 9 + 5 = 666.

It is not a de Polignac number, because 18064395 - 2⁴ = 18064379 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3051 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^18064395 is an apocalyptic number.

18064395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18064395 is a deficient number, since it is larger than the sum of its proper divisors (14014197).

18064395 is a wasteful number, since it uses less digits than its factorization.

18064395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843 (or 9840 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 18064395 is about 4250.2229353294. Note that the first 3 decimals coincide. The cubic root of 18064395 is about 262.3862908869.

The spelling of 18064395 in words is "eighteen million, sixty-four thousand, three hundred ninety-five".