18783588242 has 8 divisors (see below), whose sum is σ = 28176422076. Its totient is φ = 9391447552.

The previous prime is 18783588223. The next prime is 18783588253. The reversal of 18783588242 is 24288538781.

It can be written as a sum of positive squares in 2 ways, for example, as 18780235681 + 3352561 = 137041^2 + 1831^2 .

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

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, 99203 + ... + 217734.

Almost surely, 2^18783588242 is an apocalyptic number.

18783588242 is a deficient number, since it is larger than the sum of its proper divisors (9392833834).

18783588242 is a wasteful number, since it uses less digits than its factorization.

18783588242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346572.

The product of its digits is 6881280, while the sum is 56.

The spelling of 18783588242 in words is "eighteen billion, seven hundred eighty-three million, five hundred eighty-eight thousand, two hundred forty-two".