18014157 has 20 divisors (see below), whose sum is σ = 30755296. Its totient is φ = 10293480.

The previous prime is 18014111. The next prime is 18014167. The reversal of 18014157 is 75141081.

It is not a de Polignac number, because 18014157 - 2¹² = 18010061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18014157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18014107) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15319 + ... + 16452.

Almost surely, 2^18014157 is an apocalyptic number.

It is an amenable number.

18014157 is a deficient number, since it is larger than the sum of its proper divisors (12741139).

18014157 is an equidigital number, since it uses as much as digits as its factorization.

18014157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31790 (or 31781 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 18014157 is about 4244.3087776457. The cubic root of 18014157 is about 262.1428285196.

The spelling of 18014157 in words is "eighteen million, fourteen thousand, one hundred fifty-seven".