2126353644 has 36 divisors (see below), whose sum is σ = 5506049640. Its totient is φ = 691496640.

The previous prime is 2126353639. The next prime is 2126353661. The reversal of 2126353644 is 4463536212.

2126353644 is a `hidden beast` number, since 2 + 1 + 2 + 6 + 3 + 5 + 3 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 2126353599 and 2126353608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718834 + ... + 721785.

Almost surely, 2^2126353644 is an apocalyptic number.

It is an amenable number.

2126353644 is an abundant number, since it is smaller than the sum of its proper divisors (3379695996).

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

2126353644 is a wasteful number, since it uses less digits than its factorization.

2126353644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440670 (or 1440665 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 2126353644 is about 46112.4022796471. The cubic root of 2126353644 is about 1285.9137256116.

Adding to 2126353644 its reverse (4463536212), we get a palindrome (6589889856).

The spelling of 2126353644 in words is "two billion, one hundred twenty-six million, three hundred fifty-three thousand, six hundred forty-four".