18954379 has 2 divisors, whose sum is σ = 18954380. Its totient is φ = 18954378.

The previous prime is 18954359. The next prime is 18954401. The reversal of 18954379 is 97345981.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18954379 - 2⁷ = 18954251 is a prime.

It is not a weakly prime, because it can be changed into another prime (18954319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9477189 + 9477190.

It is an arithmetic number, because the mean of its divisors is an integer number (9477190).

Almost surely, 2^18954379 is an apocalyptic number.

18954379 is a deficient number, since it is larger than the sum of its proper divisors (1).

18954379 is an equidigital number, since it uses as much as digits as its factorization.

18954379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 18954379 is about 4353.6627108677. The cubic root of 18954379 is about 266.6264232673.

The spelling of 18954379 in words is "eighteen million, nine hundred fifty-four thousand, three hundred seventy-nine".