2113862644 has 6 divisors (see below), whose sum is σ = 3699259634. Its totient is φ = 1056931320.

The previous prime is 2113862617. The next prime is 2113862669. The reversal of 2113862644 is 4462683112.

It can be written as a sum of positive squares in only one way, i.e., 1882518544 + 231344100 = 43388^2 + 15210^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264232827 + ... + 264232834.

Almost surely, 2^2113862644 is an apocalyptic number.

It is an amenable number.

2113862644 is a deficient number, since it is larger than the sum of its proper divisors (1585396990).

2113862644 is a wasteful number, since it uses less digits than its factorization.

2113862644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528465665 (or 528465663 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 2113862644 is about 45976.7619999495. The cubic root of 2113862644 is about 1283.3907988585.

The spelling of 2113862644 in words is "two billion, one hundred thirteen million, eight hundred sixty-two thousand, six hundred forty-four".