99518188 has 48 divisors (see below), whose sum is σ = 219308544. Its totient is φ = 38384640.

The previous prime is 99518173. The next prime is 99518201. The reversal of 99518188 is 88181599.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30156 + ... + 33292.

It is an arithmetic number, because the mean of its divisors is an integer number (4568928).

Almost surely, 2^99518188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99518188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109654272).

99518188 is an abundant number, since it is smaller than the sum of its proper divisors (119790356).

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

99518188 is a wasteful number, since it uses less digits than its factorization.

99518188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3260 counting only the distinct ones).

The product of its digits is 207360, while the sum is 49.

The square root of 99518188 is about 9975.8803120326. The cubic root of 99518188 is about 463.4122251783.

The spelling of 99518188 in words is "ninety-nine million, five hundred eighteen thousand, one hundred eighty-eight".