18397085 has 24 divisors (see below), whose sum is σ = 25835136. Its totient is φ = 12319200.

The previous prime is 18397081. The next prime is 18397109. The reversal of 18397085 is 58079381.

It is a happy number.

It is not a de Polignac number, because 18397085 - 2² = 18397081 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 (18397081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121760 + ... + 121910.

It is an arithmetic number, because the mean of its divisors is an integer number (1076464).

Almost surely, 2^18397085 is an apocalyptic number.

It is an amenable number.

18397085 is a deficient number, since it is larger than the sum of its proper divisors (7438051).

18397085 is an equidigital number, since it uses as much as digits as its factorization.

18397085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 18397085 is about 4289.1823230075. The cubic root of 18397085 is about 263.9872822539.

The spelling of 18397085 in words is "eighteen million, three hundred ninety-seven thousand, eighty-five".