18095997 has 8 divisors (see below), whose sum is σ = 24780256. Its totient is φ = 11737872.

The previous prime is 18095989. The next prime is 18096011. The reversal of 18095997 is 79959081.

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

It is not a de Polignac number, because 18095997 - 2³ = 18095989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18095197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81403 + ... + 81624.

It is an arithmetic number, because the mean of its divisors is an integer number (3097532).

Almost surely, 2^18095997 is an apocalyptic number.

It is an amenable number.

18095997 is a deficient number, since it is larger than the sum of its proper divisors (6684259).

18095997 is a wasteful number, since it uses less digits than its factorization.

18095997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163067.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 18095997 is about 4253.9389981522. The cubic root of 18095997 is about 262.5392086557.

The spelling of 18095997 in words is "eighteen million, ninety-five thousand, nine hundred ninety-seven".