2857157089 has 2 divisors, whose sum is σ = 2857157090. Its totient is φ = 2857157088.

The previous prime is 2857157087. The next prime is 2857157117. The reversal of 2857157089 is 9807517582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2848036689 + 9120400 = 53367^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857157089 - 2¹ = 2857157087 is a prime.

Together with 2857157087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2857157087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428578544 + 1428578545.

It is an arithmetic number, because the mean of its divisors is an integer number (1428578545).

Almost surely, 2^2857157089 is an apocalyptic number.

It is an amenable number.

2857157089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857157089 is an equidigital number, since it uses as much as digits as its factorization.

2857157089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 52.

The square root of 2857157089 is about 53452.3815091526. The cubic root of 2857157089 is about 1418.9857680229.

The spelling of 2857157089 in words is "two billion, eight hundred fifty-seven million, one hundred fifty-seven thousand, eighty-nine".