18442967 has 2 divisors, whose sum is σ = 18442968. Its totient is φ = 18442966.

The previous prime is 18442891. The next prime is 18442969. The reversal of 18442967 is 76924481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18442967 is a prime.

Together with 18442969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18442969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9221483 + 9221484.

It is an arithmetic number, because the mean of its divisors is an integer number (9221484).

Almost surely, 2^18442967 is an apocalyptic number.

18442967 is a deficient number, since it is larger than the sum of its proper divisors (1).

18442967 is an equidigital number, since it uses as much as digits as its factorization.

18442967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 18442967 is about 4294.5275642380. The cubic root of 18442967 is about 264.2065599122.

The spelling of 18442967 in words is "eighteen million, four hundred forty-two thousand, nine hundred sixty-seven".