99188418 has 16 divisors (see below), whose sum is σ = 226716480. Its totient is φ = 28339536.

The previous prime is 99188413. The next prime is 99188429. The reversal of 99188418 is 81488199.

It is not an unprimeable number, because it can be changed into a prime (99188413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180773 + ... + 1180856.

It is an arithmetic number, because the mean of its divisors is an integer number (14169780).

Almost surely, 2^99188418 is an apocalyptic number.

99188418 is an abundant number, since it is smaller than the sum of its proper divisors (127528062).

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

99188418 is a wasteful number, since it uses less digits than its factorization.

99188418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361641.

The product of its digits is 165888, while the sum is 48.

The square root of 99188418 is about 9959.3382310272. The cubic root of 99188418 is about 462.8997943636.

It can be divided in two parts, 9918 and 8418, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 99188418 in words is "ninety-nine million, one hundred eighty-eight thousand, four hundred eighteen".