18256145 has 8 divisors (see below), whose sum is σ = 21992256. Its totient is φ = 14548336.

The previous prime is 18256097. The next prime is 18256153. The reversal of 18256145 is 54165281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18256145 - 2⁶ = 18256081 is a prime.

It is a super-2 number, since 2×18256145² = 666573660522050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5627 + ... + 8256.

It is an arithmetic number, because the mean of its divisors is an integer number (2749032).

Almost surely, 2^18256145 is an apocalyptic number.

It is an amenable number.

18256145 is a deficient number, since it is larger than the sum of its proper divisors (3736111).

18256145 is a wasteful number, since it uses less digits than its factorization.

18256145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14151.

The product of its digits is 9600, while the sum is 32.

The square root of 18256145 is about 4272.7210299761. The cubic root of 18256145 is about 263.3114181766.

The spelling of 18256145 in words is "eighteen million, two hundred fifty-six thousand, one hundred forty-five".