18701013132 has 144 divisors (see below), whose sum is σ = 51654395520. Its totient is φ = 5849858304.

The previous prime is 18701013077. The next prime is 18701013151. The reversal of 18701013132 is 23131010781.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18701013096 and 18701013105.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14575363 + ... + 14576645.

It is an arithmetic number, because the mean of its divisors is an integer number (358711080).

Almost surely, 2^18701013132 is an apocalyptic number.

18701013132 is a gapful number since it is divisible by the number (12) 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 18701013132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25827197760).

18701013132 is an abundant number, since it is smaller than the sum of its proper divisors (32953382388).

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

18701013132 is a wasteful number, since it uses less digits than its factorization.

18701013132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797 (or 1772 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The spelling of 18701013132 in words is "eighteen billion, seven hundred one million, thirteen thousand, one hundred thirty-two".