2130645917 has 4 divisors (see below), whose sum is σ = 2223282720. Its totient is φ = 2038009116.

The previous prime is 2130645911. The next prime is 2130645919. The reversal of 2130645917 is 7195460312.

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 not a de Polignac number, because 2130645917 - 2²⁶ = 2063537053 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 (2130645911) 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, 46318367 + ... + 46318412.

It is an arithmetic number, because the mean of its divisors is an integer number (555820680).

Almost surely, 2^2130645917 is an apocalyptic number.

It is an amenable number.

2130645917 is a deficient number, since it is larger than the sum of its proper divisors (92636803).

2130645917 is an equidigital number, since it uses as much as digits as its factorization.

2130645917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92636802.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 2130645917 is about 46158.9202321718. The cubic root of 2130645917 is about 1286.7783956761.

The spelling of 2130645917 in words is "two billion, one hundred thirty million, six hundred forty-five thousand, nine hundred seventeen".