2139373672 has 8 divisors (see below), whose sum is σ = 4011325650. Its totient is φ = 1069686832.

The previous prime is 2139373657. The next prime is 2139373679. The reversal of 2139373672 is 2763739312.

It can be written as a sum of positive squares in only one way, i.e., 2032747396 + 106626276 = 45086^2 + 10326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2139373679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133710847 + ... + 133710862.

Almost surely, 2^2139373672 is an apocalyptic number.

It is an amenable number.

2139373672 is a deficient number, since it is larger than the sum of its proper divisors (1871951978).

2139373672 is a wasteful number, since it uses less digits than its factorization.

2139373672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267421715 (or 267421711 counting only the distinct ones).

The product of its digits is 285768, while the sum is 43.

The square root of 2139373672 is about 46253.3638992884. The cubic root of 2139373672 is about 1288.5330101733.

The spelling of 2139373672 in words is "two billion, one hundred thirty-nine million, three hundred seventy-three thousand, six hundred seventy-two".