18954459 has 8 divisors (see below), whose sum is σ = 28080720. Its totient is φ = 12636288.

The previous prime is 18954451. The next prime is 18954493. The reversal of 18954459 is 95445981.

It is not a de Polignac number, because 18954459 - 2³ = 18954451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18954451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350982 + ... + 351035.

It is an arithmetic number, because the mean of its divisors is an integer number (3510090).

Almost surely, 2^18954459 is an apocalyptic number.

18954459 is a deficient number, since it is larger than the sum of its proper divisors (9126261).

18954459 is an equidigital number, since it uses as much as digits as its factorization.

18954459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702026 (or 702020 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 18954459 is about 4353.6718985243. The cubic root of 18954459 is about 266.6267983800.

The spelling of 18954459 in words is "eighteen million, nine hundred fifty-four thousand, four hundred fifty-nine".