2128725159 has 24 divisors (see below), whose sum is σ = 3289193088. Its totient is φ = 1214240640.

The previous prime is 2128725149. The next prime is 2128725169. The reversal of 2128725159 is 9515278212.

It is an interprime number because it is at equal distance from previous prime (2128725149) and next prime (2128725169).

It is not a de Polignac number, because 2128725159 - 2⁵ = 2128725127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2128725159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128725149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102067 + ... + 121140.

It is an arithmetic number, because the mean of its divisors is an integer number (137049712).

Almost surely, 2^2128725159 is an apocalyptic number.

2128725159 is a deficient number, since it is larger than the sum of its proper divisors (1160467929).

2128725159 is a wasteful number, since it uses less digits than its factorization.

2128725159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223255 (or 223238 counting only the distinct ones).

The product of its digits is 100800, while the sum is 42.

The square root of 2128725159 is about 46138.1096166716. The cubic root of 2128725159 is about 1286.3916064001.

The spelling of 2128725159 in words is "two billion, one hundred twenty-eight million, seven hundred twenty-five thousand, one hundred fifty-nine".