2089128157 has 4 divisors (see below), whose sum is σ = 2179959840. Its totient is φ = 1998296476.

The previous prime is 2089128149. The next prime is 2089128163. The reversal of 2089128157 is 7518219802.

It is a happy number.

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 2089128157 - 2³ = 2089128149 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 (2089128857) 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, 45415807 + ... + 45415852.

It is an arithmetic number, because the mean of its divisors is an integer number (544989960).

Almost surely, 2^2089128157 is an apocalyptic number.

It is an amenable number.

2089128157 is a deficient number, since it is larger than the sum of its proper divisors (90831683).

2089128157 is an equidigital number, since it uses as much as digits as its factorization.

2089128157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90831682.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 2089128157 is about 45706.9814907963. The cubic root of 2089128157 is about 1278.3654585653.

The spelling of 2089128157 in words is "two billion, eighty-nine million, one hundred twenty-eight thousand, one hundred fifty-seven".