18397023 has 8 divisors (see below), whose sum is σ = 24875136. Its totient is φ = 12091800.

The previous prime is 18397019. The next prime is 18397037. The reversal of 18397023 is 32079381.

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

It is not a de Polignac number, because 18397023 - 2² = 18397019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18397003) 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, 42973 + ... + 43398.

It is an arithmetic number, because the mean of its divisors is an integer number (3109392).

Almost surely, 2^18397023 is an apocalyptic number.

18397023 is a deficient number, since it is larger than the sum of its proper divisors (6478113).

18397023 is an equidigital number, since it uses as much as digits as its factorization.

18397023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86445.

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

The square root of 18397023 is about 4289.1750955166. The cubic root of 18397023 is about 263.9869856991.

The spelling of 18397023 in words is "eighteen million, three hundred ninety-seven thousand, twenty-three".