18401807116 has 144 divisors (see below), whose sum is σ = 43241385600. Its totient is φ = 6756825600.

The previous prime is 18401807107. The next prime is 18401807119. The reversal of 18401807116 is 61170810481.

It is not an unprimeable number, because it can be changed into a prime (18401807119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8642340 + ... + 8644468.

It is an arithmetic number, because the mean of its divisors is an integer number (300287400).

Almost surely, 2^18401807116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18401807116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21620692800).

18401807116 is an abundant number, since it is smaller than the sum of its proper divisors (24839578484).

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

18401807116 is a wasteful number, since it uses less digits than its factorization.

18401807116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 2379 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 37.

The spelling of 18401807116 in words is "eighteen billion, four hundred one million, eight hundred seven thousand, one hundred sixteen".