99918135 has 12 divisors (see below), whose sum is σ = 173191512. Its totient is φ = 53289648.

The previous prime is 99918113. The next prime is 99918149. The reversal of 99918135 is 53181999.

It is a de Polignac number, because none of the positive numbers 2^k-99918135 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2220403 = 99918135 / (9 + 9 + 9 + 1 + 8 + 1 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1110157 + ... + 1110246.

It is an arithmetic number, because the mean of its divisors is an integer number (14432626).

Almost surely, 2^99918135 is an apocalyptic number.

99918135 is a deficient number, since it is larger than the sum of its proper divisors (73273377).

99918135 is a wasteful number, since it uses less digits than its factorization.

99918135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220414 (or 2220411 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 99918135 is about 9995.9059119221. The cubic root of 99918135 is about 464.0321875585.

The spelling of 99918135 in words is "ninety-nine million, nine hundred eighteen thousand, one hundred thirty-five".