2113538508 has 120 divisors (see below), whose sum is σ = 5678830080. Its totient is φ = 685208160.

The previous prime is 2113538461. The next prime is 2113538513. The reversal of 2113538508 is 8058353112.

2113538508 is a `hidden beast` number, since 2 + 113 + 5 + 38 + 508 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1816735 + ... + 1817897.

It is an arithmetic number, because the mean of its divisors is an integer number (47323584).

Almost surely, 2^2113538508 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 2113538508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2839415040).

2113538508 is an abundant number, since it is smaller than the sum of its proper divisors (3565291572).

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

2113538508 is a wasteful number, since it uses less digits than its factorization.

2113538508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2113538508 is about 45973.2368666815. The cubic root of 2113538508 is about 1283.3251978720.

The spelling of 2113538508 in words is "two billion, one hundred thirteen million, five hundred thirty-eight thousand, five hundred eight".