18499394 has 8 divisors (see below), whose sum is σ = 27785280. Its totient is φ = 9237636.

The previous prime is 18499379. The next prime is 18499421. The reversal of 18499394 is 49399481.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974 + ... + 7265.

It is an arithmetic number, because the mean of its divisors is an integer number (3473160).

Almost surely, 2^18499394 is an apocalyptic number.

18499394 is a deficient number, since it is larger than the sum of its proper divisors (9285886).

18499394 is a wasteful number, since it uses less digits than its factorization.

18499394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12064.

The product of its digits is 279936, while the sum is 47.

The square root of 18499394 is about 4301.0921868753. The cubic root of 18499394 is about 264.4757357825.

The spelling of 18499394 in words is "eighteen million, four hundred ninety-nine thousand, three hundred ninety-four".