18640204298 has 8 divisors (see below), whose sum is σ = 28013769408. Its totient is φ = 9302281164.

The previous prime is 18640204291. The next prime is 18640204301. The reversal of 18640204298 is 89240204681.

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

It is not an unprimeable number, because it can be changed into a prime (18640204291) 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, 8909186 + ... + 8911277.

It is an arithmetic number, because the mean of its divisors is an integer number (3501721176).

Almost surely, 2^18640204298 is an apocalyptic number.

18640204298 is a deficient number, since it is larger than the sum of its proper divisors (9373565110).

18640204298 is a wasteful number, since it uses less digits than its factorization.

18640204298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17820988.

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

The spelling of 18640204298 in words is "eighteen billion, six hundred forty million, two hundred four thousand, two hundred ninety-eight".