18363494 has 16 divisors (see below), whose sum is σ = 28615488. Its totient is φ = 8831592.

The previous prime is 18363479. The next prime is 18363529. The reversal of 18363494 is 49436381.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4169 + ... + 7355.

It is an arithmetic number, because the mean of its divisors is an integer number (1788468).

Almost surely, 2^18363494 is an apocalyptic number.

18363494 is a deficient number, since it is larger than the sum of its proper divisors (10251994).

18363494 is a wasteful number, since it uses less digits than its factorization.

18363494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299.

The product of its digits is 62208, while the sum is 38.

The square root of 18363494 is about 4285.2647526145. The cubic root of 18363494 is about 263.8265140424.

The spelling of 18363494 in words is "eighteen million, three hundred sixty-three thousand, four hundred ninety-four".