2158643595 has 24 divisors (see below), whose sum is σ = 3668954544. Its totient is φ = 1083552256.

The previous prime is 2158643593. The next prime is 2158643621. The reversal of 2158643595 is 5953468512.

It is not a de Polignac number, because 2158643595 - 2¹ = 2158643593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2158643593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244644 + ... + 253313.

It is an arithmetic number, because the mean of its divisors is an integer number (152873106).

Almost surely, 2^2158643595 is an apocalyptic number.

2158643595 is a deficient number, since it is larger than the sum of its proper divisors (1510310949).

2158643595 is a wasteful number, since it uses less digits than its factorization.

2158643595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497999 (or 497982 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 48.

The square root of 2158643595 is about 46461.2052684818. The cubic root of 2158643595 is about 1292.3901753249.

The spelling of 2158643595 in words is "two billion, one hundred fifty-eight million, six hundred forty-three thousand, five hundred ninety-five".