99801018 has 16 divisors (see below), whose sum is σ = 221780160. Its totient is φ = 33266988.

The previous prime is 99801007. The next prime is 99801043. The reversal of 99801018 is 81010899.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924030 + ... + 924137.

It is an arithmetic number, because the mean of its divisors is an integer number (13861260).

Almost surely, 2^99801018 is an apocalyptic number.

99801018 is an abundant number, since it is smaller than the sum of its proper divisors (121979142).

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

99801018 is a wasteful number, since it uses less digits than its factorization.

99801018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848178 (or 1848172 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 99801018 is about 9990.0459458403. The cubic root of 99801018 is about 463.8508147274.

The spelling of 99801018 in words is "ninety-nine million, eight hundred one thousand, eighteen".