18036508100 has 108 divisors (see below), whose sum is σ = 44612925840. Its totient is φ = 6309014400.

The previous prime is 18036508099. The next prime is 18036508103. The reversal of 18036508100 is 180563081.

It is a super-2 number, since 2×18036508100² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18036508103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 293015 + ... + 349185.

Almost surely, 2^18036508100 is an apocalyptic number.

18036508100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18036508100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22306462920).

18036508100 is an abundant number, since it is smaller than the sum of its proper divisors (26576417740).

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

18036508100 is a wasteful number, since it uses less digits than its factorization.

18036508100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56230 (or 56210 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 18036508100 in words is "eighteen billion, thirty-six million, five hundred eight thousand, one hundred".