18484694 has 4 divisors (see below), whose sum is σ = 27727044. Its totient is φ = 9242346.

The previous prime is 18484679. The next prime is 18484721. The reversal of 18484694 is 49648481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49648481 = 181 ⋅274301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4621172 + ... + 4621175.

It is an arithmetic number, because the mean of its divisors is an integer number (6931761).

Almost surely, 2^18484694 is an apocalyptic number.

18484694 is a deficient number, since it is larger than the sum of its proper divisors (9242350).

18484694 is an equidigital number, since it uses as much as digits as its factorization.

18484694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242349.

The product of its digits is 221184, while the sum is 44.

The square root of 18484694 is about 4299.3829789866. The cubic root of 18484694 is about 264.4056645945.

The spelling of 18484694 in words is "eighteen million, four hundred eighty-four thousand, six hundred ninety-four".