18363810100 has 18 divisors (see below), whose sum is σ = 39849468134. Its totient is φ = 7345524000.

The previous prime is 18363810079. The next prime is 18363810107. The reversal of 18363810100 is 101836381.

It can be written as a sum of positive squares in 3 ways, for example, as 3939319696 + 14424490404 = 62764^2 + 120102^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18363810107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91818951 + ... + 91819150.

Almost surely, 2^18363810100 is an apocalyptic number.

18363810100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18363810100 is an abundant number, since it is smaller than the sum of its proper divisors (21485658034).

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

18363810100 is a wasteful number, since it uses less digits than its factorization.

18363810100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183638115 (or 183638108 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 18363810100 in words is "eighteen billion, three hundred sixty-three million, eight hundred ten thousand, one hundred".