2113251606 has 40 divisors (see below), whose sum is σ = 5013799560. Its totient is φ = 662980032.

The previous prime is 2113251587. The next prime is 2113251607. The reversal of 2113251606 is 6061523112.

2113251606 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 2 + 51 + 606 = 666.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2113251606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113251607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 380916 + ... + 386423.

It is an arithmetic number, because the mean of its divisors is an integer number (125344989).

Almost surely, 2^2113251606 is an apocalyptic number.

2113251606 is an abundant number, since it is smaller than the sum of its proper divisors (2900547954).

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

2113251606 is a wasteful number, since it uses less digits than its factorization.

2113251606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767370 (or 767361 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2113251606 is about 45970.1164453605. The cubic root of 2113251606 is about 1283.2671269756.

Adding to 2113251606 its reverse (6061523112), we get a palindrome (8174774718).

The spelling of 2113251606 in words is "two billion, one hundred thirteen million, two hundred fifty-one thousand, six hundred six".