2158084079 has 4 divisors (see below), whose sum is σ = 2184085176. Its totient is φ = 2132082984.

The previous prime is 2158084073. The next prime is 2158084099. The reversal of 2158084079 is 9704808512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158084079 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 (2158084073) 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, 13000424 + ... + 13000589.

It is an arithmetic number, because the mean of its divisors is an integer number (546021294).

Almost surely, 2^2158084079 is an apocalyptic number.

2158084079 is a deficient number, since it is larger than the sum of its proper divisors (26001097).

2158084079 is an equidigital number, since it uses as much as digits as its factorization.

2158084079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26001096.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2158084079 is about 46455.1835536143. The cubic root of 2158084079 is about 1292.2785040470.

The spelling of 2158084079 in words is "two billion, one hundred fifty-eight million, eighty-four thousand, seventy-nine".