18880843018 has 8 divisors (see below), whose sum is σ = 28333410948. Its totient is φ = 9436372704.

The previous prime is 18880842997. The next prime is 18880843019. The reversal of 18880843018 is 81034808881.

It can be written as a sum of positive squares in 2 ways, for example, as 18476149329 + 404693689 = 135927^2 + 20117^2 .

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 (18880843019) 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, 2018571 + ... + 2027902.

Almost surely, 2^18880843018 is an apocalyptic number.

18880843018 is a deficient number, since it is larger than the sum of its proper divisors (9452567930).

18880843018 is a wasteful number, since it uses less digits than its factorization.

18880843018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048808.

The product of its (nonzero) digits is 393216, while the sum is 49.

The spelling of 18880843018 in words is "eighteen billion, eight hundred eighty million, eight hundred forty-three thousand, eighteen".