18065957 has 24 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 14073696.

The previous prime is 18065921. The next prime is 18065981. The reversal of 18065957 is 75956081.

It is a de Polignac number, because none of the positive numbers 2^k-18065957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50144 + ... + 50502.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^18065957 is an apocalyptic number.

It is an amenable number.

18065957 is a deficient number, since it is larger than the sum of its proper divisors (4916443).

18065957 is a wasteful number, since it uses less digits than its factorization.

18065957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 18065957 is about 4250.4066864243. The cubic root of 18065957 is about 262.3938533798.

The spelling of 18065957 in words is "eighteen million, sixty-five thousand, nine hundred fifty-seven".