18372093 has 8 divisors (see below), whose sum is σ = 24516000. Its totient is φ = 12238128.

The previous prime is 18372083. The next prime is 18372097. The reversal of 18372093 is 39027381.

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

It is not a de Polignac number, because 18372093 - 2²⁰ = 17323517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18372097) 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, 5458 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (3064500).

Almost surely, 2^18372093 is an apocalyptic number.

It is an amenable number.

18372093 is a deficient number, since it is larger than the sum of its proper divisors (6143907).

18372093 is a wasteful number, since it uses less digits than its factorization.

18372093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 18372093 is about 4286.2679570927. The cubic root of 18372093 is about 263.8676879457.

The spelling of 18372093 in words is "eighteen million, three hundred seventy-two thousand, ninety-three".