20131186008 has 64 divisors (see below), whose sum is σ = 50676192000. Its totient is φ = 6664042112.

The previous prime is 20131186003. The next prime is 20131186043. The reversal of 20131186008 is 80068113102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131186003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6848203 + ... + 6851141.

It is an arithmetic number, because the mean of its divisors is an integer number (791815500).

Almost surely, 2^20131186008 is an apocalyptic number.

It is an amenable number.

20131186008 is an abundant number, since it is smaller than the sum of its proper divisors (30545005992).

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

20131186008 is a wasteful number, since it uses less digits than its factorization.

20131186008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824 (or 4820 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 20131186008 in words is "twenty billion, one hundred thirty-one million, one hundred eighty-six thousand, eight".