18314397 has 16 divisors (see below), whose sum is σ = 28008960. Its totient is φ = 11815200.

The previous prime is 18314393. The next prime is 18314407. The reversal of 18314397 is 79341381.

It is a happy number.

It is not a de Polignac number, because 18314397 - 2² = 18314393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18314393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10104 + ... + 11777.

It is an arithmetic number, because the mean of its divisors is an integer number (1750560).

Almost surely, 2^18314397 is an apocalyptic number.

It is an amenable number.

18314397 is a deficient number, since it is larger than the sum of its proper divisors (9694563).

18314397 is a wasteful number, since it uses less digits than its factorization.

18314397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21921 (or 21915 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 18314397 is about 4279.5323342627. The cubic root of 18314397 is about 263.5911802616.

The spelling of 18314397 in words is "eighteen million, three hundred fourteen thousand, three hundred ninety-seven".