2130487857 has 6 divisors (see below), whose sum is σ = 3077371362. Its totient is φ = 1420325232.

The previous prime is 2130487829. The next prime is 2130487867. The reversal of 2130487857 is 7587840312.

It can be written as a sum of positive squares in only one way, i.e., 2113148961 + 17338896 = 45969^2 + 4164^2 .

It is not a de Polignac number, because 2130487857 - 2⁷ = 2130487729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2130487867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118360428 + ... + 118360445.

It is an arithmetic number, because the mean of its divisors is an integer number (512895227).

Almost surely, 2^2130487857 is an apocalyptic number.

It is an amenable number.

2130487857 is a deficient number, since it is larger than the sum of its proper divisors (946883505).

2130487857 is a wasteful number, since it uses less digits than its factorization.

2130487857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236720879 (or 236720876 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 2130487857 is about 46157.2080719794. The cubic root of 2130487857 is about 1286.7465754002.

The spelling of 2130487857 in words is "two billion, one hundred thirty million, four hundred eighty-seven thousand, eight hundred fifty-seven".