2128537399 has 16 divisors (see below), whose sum is σ = 2193702912. Its totient is φ = 2064430368.

The previous prime is 2128537373. The next prime is 2128537451. The reversal of 2128537399 is 9937358212.

It is a cyclic number.

It is not a de Polignac number, because 2128537399 - 2⁹ = 2128536887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128537319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3116112 + ... + 3116794.

It is an arithmetic number, because the mean of its divisors is an integer number (137106432).

Almost surely, 2^2128537399 is an apocalyptic number.

2128537399 is a deficient number, since it is larger than the sum of its proper divisors (65165513).

2128537399 is a wasteful number, since it uses less digits than its factorization.

2128537399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its digits is 816480, while the sum is 49.

The square root of 2128537399 is about 46136.0748113664. The cubic root of 2128537399 is about 1286.3537840774.

The spelling of 2128537399 in words is "two billion, one hundred twenty-eight million, five hundred thirty-seven thousand, three hundred ninety-nine".