18397411 has 2 divisors, whose sum is σ = 18397412. Its totient is φ = 18397410.

The previous prime is 18397403. The next prime is 18397429. The reversal of 18397411 is 11479381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18397411 - 2³ = 18397403 is a prime.

It is not a weakly prime, because it can be changed into another prime (18397471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9198705 + 9198706.

It is an arithmetic number, because the mean of its divisors is an integer number (9198706).

Almost surely, 2^18397411 is an apocalyptic number.

18397411 is a deficient number, since it is larger than the sum of its proper divisors (1).

18397411 is an equidigital number, since it uses as much as digits as its factorization.

18397411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 18397411 is about 4289.2203254205. The cubic root of 18397411 is about 263.9888415470.

The spelling of 18397411 in words is "eighteen million, three hundred ninety-seven thousand, four hundred eleven".