18899498 has 8 divisors (see below), whose sum is σ = 28450980. Its totient is φ = 9415840.

The previous prime is 18899497. The next prime is 18899519. The reversal of 18899498 is 89499881.

It can be written as a sum of positive squares in 2 ways, for example, as 18774889 + 124609 = 4333^2 + 353^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18899497) 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, 16253 + ... + 17376.

Almost surely, 2^18899498 is an apocalyptic number.

18899498 is a deficient number, since it is larger than the sum of its proper divisors (9551482).

18899498 is a wasteful number, since it uses less digits than its factorization.

18899498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33912.

The product of its digits is 1492992, while the sum is 56.

The square root of 18899498 is about 4347.3552879883. The cubic root of 18899498 is about 266.3688421537.

The spelling of 18899498 in words is "eighteen million, eight hundred ninety-nine thousand, four hundred ninety-eight".