18816494 has 8 divisors (see below), whose sum is σ = 28280280. Its totient is φ = 9389736.

The previous prime is 18816463. The next prime is 18816503. The reversal of 18816494 is 49461881.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7949 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (3535035).

Almost surely, 2^18816494 is an apocalyptic number.

18816494 is a deficient number, since it is larger than the sum of its proper divisors (9463786).

18816494 is a wasteful number, since it uses less digits than its factorization.

18816494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18514.

The product of its digits is 55296, while the sum is 41.

The square root of 18816494 is about 4337.7982894551. The cubic root of 18816494 is about 265.9783180925.

The spelling of 18816494 in words is "eighteen million, eight hundred sixteen thousand, four hundred ninety-four".