18350099988 has 48 divisors (see below), whose sum is σ = 46731288576. Its totient is φ = 5558024160.

The previous prime is 18350099987. The next prime is 18350100017. The reversal of 18350099988 is 88999005381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18350099981) 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, 259245 + ... + 322347.

It is an arithmetic number, because the mean of its divisors is an integer number (973568512).

Almost surely, 2^18350099988 is an apocalyptic number.

It is an amenable number.

18350099988 is an abundant number, since it is smaller than the sum of its proper divisors (28381188588).

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

18350099988 is a wasteful number, since it uses less digits than its factorization.

18350099988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65324 (or 65322 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 60.

The spelling of 18350099988 in words is "eighteen billion, three hundred fifty million, ninety-nine thousand, nine hundred eighty-eight".