99808018 has 8 divisors (see below), whose sum is σ = 153758412. Its totient is φ = 48555216.

The previous prime is 99808013. The next prime is 99808021. The reversal of 99808018 is 81080899.

It can be written as a sum of positive squares in 2 ways, for example, as 71961289 + 27846729 = 8483^2 + 5277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (99808013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674305 + ... + 674452.

Almost surely, 2^99808018 is an apocalyptic number.

99808018 is a deficient number, since it is larger than the sum of its proper divisors (53950394).

99808018 is a wasteful number, since it uses less digits than its factorization.

99808018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348796.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 99808018 is about 9990.3962884362. The cubic root of 99808018 is about 463.8616592386.

The spelling of 99808018 in words is "ninety-nine million, eight hundred eight thousand, eighteen".