2145653913 has 16 divisors (see below), whose sum is σ = 3099178880. Its totient is φ = 1320398352.

The previous prime is 2145653897. The next prime is 2145653921. The reversal of 2145653913 is 3193565412.

It is not a de Polignac number, because 2145653913 - 2⁴ = 2145653897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2145653513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156181 + ... + 169362.

It is an arithmetic number, because the mean of its divisors is an integer number (193698680).

Almost surely, 2^2145653913 is an apocalyptic number.

It is an amenable number.

2145653913 is a deficient number, since it is larger than the sum of its proper divisors (953524967).

2145653913 is an equidigital number, since it uses as much as digits as its factorization.

2145653913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325585 (or 325559 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The square root of 2145653913 is about 46321.2037084530. The cubic root of 2145653913 is about 1289.7926299681.

The spelling of 2145653913 in words is "two billion, one hundred forty-five million, six hundred fifty-three thousand, nine hundred thirteen".