18748243052 has 48 divisors (see below), whose sum is σ = 41133899520. Its totient is φ = 7263681600.

The previous prime is 18748243051. The next prime is 18748243057. The reversal of 18748243052 is 25034284781.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 18748242994 and 18748243012.

It is not an unprimeable number, because it can be changed into a prime (18748243051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114899 + ... + 225162.

It is an arithmetic number, because the mean of its divisors is an integer number (856956240).

Almost surely, 2^18748243052 is an apocalyptic number.

It is an amenable number.

18748243052 is an abundant number, since it is smaller than the sum of its proper divisors (22385656468).

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

18748243052 is a wasteful number, since it uses less digits than its factorization.

18748243052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340262 (or 340260 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 18748243052 in words is "eighteen billion, seven hundred forty-eight million, two hundred forty-three thousand, fifty-two".