18490874002 has 8 divisors (see below), whose sum is σ = 28191004812. Its totient is φ = 9093872400.

The previous prime is 18490873993. The next prime is 18490874009. The reversal of 18490874002 is 20047809481.

It can be written as a sum of positive squares in 2 ways, for example, as 13684086441 + 4806787561 = 116979^2 + 69331^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18490874002.

It is not an unprimeable number, because it can be changed into a prime (18490874009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75782149 + ... + 75782392.

Almost surely, 2^18490874002 is an apocalyptic number.

18490874002 is a deficient number, since it is larger than the sum of its proper divisors (9700130810).

18490874002 is a wasteful number, since it uses less digits than its factorization.

18490874002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151564604.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 18490874002 in words is "eighteen billion, four hundred ninety million, eight hundred seventy-four thousand, two".