18099852 has 12 divisors (see below), whose sum is σ = 42233016. Its totient is φ = 6033280.

The previous prime is 18099821. The next prime is 18099853. The reversal of 18099852 is 25899081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18099853) 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, 754149 + ... + 754172.

It is an arithmetic number, because the mean of its divisors is an integer number (3519418).

Almost surely, 2^18099852 is an apocalyptic number.

18099852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18099852 is an abundant number, since it is smaller than the sum of its proper divisors (24133164).

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

18099852 is a wasteful number, since it uses less digits than its factorization.

18099852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508328 (or 1508326 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 18099852 is about 4254.3920834827. The cubic root of 18099852 is about 262.5578502884.

The spelling of 18099852 in words is "eighteen million, ninety-nine thousand, eight hundred fifty-two".