18464338 has 8 divisors (see below), whose sum is σ = 27982332. Its totient is φ = 9136896.

The previous prime is 18464321. The next prime is 18464339. The reversal of 18464338 is 83346481.

It can be written as a sum of positive squares in 2 ways, for example, as 18207289 + 257049 = 4267^2 + 507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18464297 and 18464306.

It is not an unprimeable number, because it can be changed into a prime (18464339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47395 + ... + 47782.

Almost surely, 2^18464338 is an apocalyptic number.

18464338 is a deficient number, since it is larger than the sum of its proper divisors (9517994).

18464338 is an equidigital number, since it uses as much as digits as its factorization.

18464338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95276.

The product of its digits is 55296, while the sum is 37.

The square root of 18464338 is about 4297.0150104462. The cubic root of 18464338 is about 264.3085713161.

The spelling of 18464338 in words is "eighteen million, four hundred sixty-four thousand, three hundred thirty-eight".