18375967 has 2 divisors, whose sum is σ = 18375968. Its totient is φ = 18375966.

The previous prime is 18375949. The next prime is 18375977. The reversal of 18375967 is 76957381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18375967 - 2¹¹ = 18373919 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18375977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9187983 + 9187984.

It is an arithmetic number, because the mean of its divisors is an integer number (9187984).

Almost surely, 2^18375967 is an apocalyptic number.

18375967 is a deficient number, since it is larger than the sum of its proper divisors (1).

18375967 is an equidigital number, since it uses as much as digits as its factorization.

18375967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 18375967 is about 4286.7198415572. The cubic root of 18375967 is about 263.8862333119.

The spelling of 18375967 in words is "eighteen million, three hundred seventy-five thousand, nine hundred sixty-seven".