2142656944 has 20 divisors (see below), whose sum is σ = 4158685960. Its totient is φ = 1069447680.

The previous prime is 2142656911. The next prime is 2142656947. The reversal of 2142656944 is 4496562412.

It is a self number, because there is not a number n which added to its sum of digits gives 2142656944.

It is not an unprimeable number, because it can be changed into a prime (2142656947) 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 3 ways as a sum of consecutive naturals, for example, 108129 + ... + 126400.

It is an arithmetic number, because the mean of its divisors is an integer number (207934298).

Almost surely, 2^2142656944 is an apocalyptic number.

It is an amenable number.

2142656944 is a deficient number, since it is larger than the sum of its proper divisors (2016029016).

2142656944 is a wasteful number, since it uses less digits than its factorization.

2142656944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235108 (or 235102 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 2142656944 is about 46288.8425433171. The cubic root of 2142656944 is about 1289.1918388190.

The spelling of 2142656944 in words is "two billion, one hundred forty-two million, six hundred fifty-six thousand, nine hundred forty-four".