2130128597 has 4 divisors (see below), whose sum is σ = 2130262560. Its totient is φ = 2129994636.

The previous prime is 2130128593. The next prime is 2130128617. The reversal of 2130128597 is 7958210312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2130128597 - 2² = 2130128593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2130128597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130128593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39323 + ... + 76200.

It is an arithmetic number, because the mean of its divisors is an integer number (532565640).

Almost surely, 2^2130128597 is an apocalyptic number.

It is an amenable number.

2130128597 is a deficient number, since it is larger than the sum of its proper divisors (133963).

2130128597 is a wasteful number, since it uses less digits than its factorization.

2130128597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133962.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2130128597 is about 46153.3162080473. The cubic root of 2130128597 is about 1286.6742441484.

The spelling of 2130128597 in words is "two billion, one hundred thirty million, one hundred twenty-eight thousand, five hundred ninety-seven".