2158641792 has 64 divisors (see below), whose sum is σ = 6371001600. Its totient is φ = 719546112.

The previous prime is 2158641787. The next prime is 2158641809. The reversal of 2158641792 is 2971468512.

2158641792 is a `hidden beast` number, since 21 + 586 + 41 + 7 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308848 + ... + 315759.

It is an arithmetic number, because the mean of its divisors is an integer number (99546900).

Almost surely, 2^2158641792 is an apocalyptic number.

It is an amenable number.

2158641792 is an abundant number, since it is smaller than the sum of its proper divisors (4212359808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2158641792 is an equidigital number, since it uses as much as digits as its factorization.

2158641792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624630 (or 624612 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2158641792 is about 46461.1858651929. The cubic root of 2158641792 is about 1292.3898155033.

The spelling of 2158641792 in words is "two billion, one hundred fifty-eight million, six hundred forty-one thousand, seven hundred ninety-two".