18486494 has 8 divisors (see below), whose sum is σ = 29862840. Its totient is φ = 8532216.

The previous prime is 18486491. The next prime is 18486499. The reversal of 18486494 is 49468481.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18486491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355484 + ... + 355535.

It is an arithmetic number, because the mean of its divisors is an integer number (3732855).

Almost surely, 2^18486494 is an apocalyptic number.

18486494 is a deficient number, since it is larger than the sum of its proper divisors (11376346).

18486494 is a wasteful number, since it uses less digits than its factorization.

18486494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711034.

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

The square root of 18486494 is about 4299.5923062542. The cubic root of 18486494 is about 264.4142467355.

The spelling of 18486494 in words is "eighteen million, four hundred eighty-six thousand, four hundred ninety-four".