2139735672 has 24 divisors (see below), whose sum is σ = 5795117640. Its totient is φ = 713245200.

The previous prime is 2139735581. The next prime is 2139735683. The reversal of 2139735672 is 2765379312.

2139735672 is a `hidden beast` number, since 2 + 13 + 9 + 73 + 567 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14859204 + ... + 14859347.

It is an arithmetic number, because the mean of its divisors is an integer number (241463235).

Almost surely, 2^2139735672 is an apocalyptic number.

It is an amenable number.

2139735672 is an abundant number, since it is smaller than the sum of its proper divisors (3655381968).

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

2139735672 is a wasteful number, since it uses less digits than its factorization.

2139735672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29718563 (or 29718556 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 2139735672 is about 46257.2769626575. The cubic root of 2139735672 is about 1288.6056829450.

The spelling of 2139735672 in words is "two billion, one hundred thirty-nine million, seven hundred thirty-five thousand, six hundred seventy-two".