18744652242 has 12 divisors (see below), whose sum is σ = 40613413230. Its totient is φ = 6248217408.

The previous prime is 18744652229. The next prime is 18744652253. The reversal of 18744652242 is 24225644781.

18744652242 is a `hidden beast` number, since 1 + 87 + 4 + 4 + 6 + 522 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18741336201 + 3316041 = 136899^2 + 1821^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 520684767 + ... + 520684802.

Almost surely, 2^18744652242 is an apocalyptic number.

18744652242 is an abundant number, since it is smaller than the sum of its proper divisors (21868760988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18744652242 is a wasteful number, since it uses less digits than its factorization.

18744652242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041369577 (or 1041369574 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 18744652242 in words is "eighteen billion, seven hundred forty-four million, six hundred fifty-two thousand, two hundred forty-two".