2158646675 has 12 divisors (see below), whose sum is σ = 2677592016. Its totient is φ = 1726356000.

The previous prime is 2158646647. The next prime is 2158646681. The reversal of 2158646675 is 5766468512.

It is not a de Polignac number, because 2158646675 - 2⁸ = 2158646419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75650 + ... + 100200.

It is an arithmetic number, because the mean of its divisors is an integer number (223132668).

Almost surely, 2^2158646675 is an apocalyptic number.

2158646675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2158646675 is a deficient number, since it is larger than the sum of its proper divisors (518945341).

2158646675 is a wasteful number, since it uses less digits than its factorization.

2158646675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28078 (or 28073 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The square root of 2158646675 is about 46461.2384144030. The cubic root of 2158646675 is about 1292.3907899949.

The spelling of 2158646675 in words is "two billion, one hundred fifty-eight million, six hundred forty-six thousand, six hundred seventy-five".