18200508090 has 64 divisors (see below), whose sum is σ = 45235846656. Its totient is φ = 4683454272.

The previous prime is 18200508043. The next prime is 18200508103. The reversal of 18200508090 is 9080500281.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22077 + ... + 192063.

It is an arithmetic number, because the mean of its divisors is an integer number (706810104).

Almost surely, 2^18200508090 is an apocalyptic number.

18200508090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18200508090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22617923328).

18200508090 is an abundant number, since it is smaller than the sum of its proper divisors (27035338566).

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

18200508090 is a wasteful number, since it uses less digits than its factorization.

18200508090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170123.

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 18200508090 in words is "eighteen billion, two hundred million, five hundred eight thousand, ninety".