18673379 has 2 divisors, whose sum is σ = 18673380. Its totient is φ = 18673378.

The previous prime is 18673349. The next prime is 18673387. The reversal of 18673379 is 97337681.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18673379 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18673339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9336689 + 9336690.

It is an arithmetic number, because the mean of its divisors is an integer number (9336690).

Almost surely, 2^18673379 is an apocalyptic number.

18673379 is a deficient number, since it is larger than the sum of its proper divisors (1).

18673379 is an equidigital number, since it uses as much as digits as its factorization.

18673379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 18673379 is about 4321.2705307583. The cubic root of 18673379 is about 265.3022728569.

The spelling of 18673379 in words is "eighteen million, six hundred seventy-three thousand, three hundred seventy-nine".