18555242748 has 48 divisors (see below), whose sum is σ = 49563112704. Its totient is φ = 5292662400.

The previous prime is 18555242683. The next prime is 18555242749. The reversal of 18555242748 is 84724255581.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18555242748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18555242749) 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, 133290 + ... + 234257.

It is an arithmetic number, because the mean of its divisors is an integer number (1032564848).

Almost surely, 2^18555242748 is an apocalyptic number.

It is an amenable number.

18555242748 is an abundant number, since it is smaller than the sum of its proper divisors (31007869956).

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

18555242748 is a wasteful number, since it uses less digits than its factorization.

18555242748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368162 (or 368160 counting only the distinct ones).

The product of its digits is 3584000, while the sum is 51.

The spelling of 18555242748 in words is "eighteen billion, five hundred fifty-five million, two hundred forty-two thousand, seven hundred forty-eight".