18087035800 has 24 divisors (see below), whose sum is σ = 42052358700. Its totient is φ = 7234814240.

The previous prime is 18087035741. The next prime is 18087035801. The reversal of 18087035800 is 853078081.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18087035801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45217390 + ... + 45217789.

Almost surely, 2^18087035800 is an apocalyptic number.

18087035800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18087035800 is an abundant number, since it is smaller than the sum of its proper divisors (23965322900).

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

18087035800 is a wasteful number, since it uses less digits than its factorization.

18087035800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90435195 (or 90435186 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 18087035800 in words is "eighteen billion, eighty-seven million, thirty-five thousand, eight hundred".