18409242288 has 80 divisors (see below), whose sum is σ = 48118031360. Its totient is φ = 6064457472.

The previous prime is 18409242283. The next prime is 18409242289. The reversal of 18409242288 is 88224290481.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (18409242283) 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, 1481670 + ... + 1494042.

It is an arithmetic number, because the mean of its divisors is an integer number (601475392).

Almost surely, 2^18409242288 is an apocalyptic number.

It is an amenable number.

18409242288 is an abundant number, since it is smaller than the sum of its proper divisors (29708789072).

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

18409242288 is a wasteful number, since it uses less digits than its factorization.

18409242288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12746 (or 12740 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The spelling of 18409242288 in words is "eighteen billion, four hundred nine million, two hundred forty-two thousand, two hundred eighty-eight".