2125738128 has 40 divisors (see below), whose sum is σ = 5522191200. Its totient is φ = 704617984.

The previous prime is 2125738093. The next prime is 2125738133. The reversal of 2125738128 is 8218375212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115113 + ... + 132296.

It is an arithmetic number, because the mean of its divisors is an integer number (138054780).

Almost surely, 2^2125738128 is an apocalyptic number.

It is an amenable number.

2125738128 is an abundant number, since it is smaller than the sum of its proper divisors (3396453072).

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

2125738128 is a wasteful number, since it uses less digits than its factorization.

2125738128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247599 (or 247593 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 2125738128 is about 46105.7277135932. The cubic root of 2125738128 is about 1285.7896357392.

The spelling of 2125738128 in words is "two billion, one hundred twenty-five million, seven hundred thirty-eight thousand, one hundred twenty-eight".