18469379 has 2 divisors, whose sum is σ = 18469380. Its totient is φ = 18469378.

The previous prime is 18469351. The next prime is 18469411. The reversal of 18469379 is 97396481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18469379 - 2²⁰ = 17420803 is a prime.

It is a super-2 number, since 2×18469379² = 682235921291282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18469309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9234689 + 9234690.

It is an arithmetic number, because the mean of its divisors is an integer number (9234690).

Almost surely, 2^18469379 is an apocalyptic number.

18469379 is a deficient number, since it is larger than the sum of its proper divisors (1).

18469379 is an equidigital number, since it uses as much as digits as its factorization.

18469379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 18469379 is about 4297.6015403944. The cubic root of 18469379 is about 264.3326223323.

The spelling of 18469379 in words is "eighteen million, four hundred sixty-nine thousand, three hundred seventy-nine".