18954359 has 2 divisors, whose sum is σ = 18954360. Its totient is φ = 18954358.

The previous prime is 18954349. The next prime is 18954379. The reversal of 18954359 is 95345981.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (95345981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18954359 - 2²⁴ = 2177143 is a prime.

It is a congruent number.

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, 9477179 + 9477180.

It is an arithmetic number, because the mean of its divisors is an integer number (9477180).

Almost surely, 2^18954359 is an apocalyptic number.

18954359 is a deficient number, since it is larger than the sum of its proper divisors (1).

18954359 is an equidigital number, since it uses as much as digits as its factorization.

18954359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 18954359 is about 4353.6604139505. The cubic root of 18954359 is about 266.6263294890.

The spelling of 18954359 in words is "eighteen million, nine hundred fifty-four thousand, three hundred fifty-nine".