2158674091 has 16 divisors (see below), whose sum is σ = 2537650944. Its totient is φ = 1797501024.

The previous prime is 2158674083. The next prime is 2158674097. The reversal of 2158674091 is 1904768512.

It is a cyclic number.

It is not a de Polignac number, because 2158674091 - 2³ = 2158674083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158674097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170796 + ... + 182998.

It is an arithmetic number, because the mean of its divisors is an integer number (158603184).

Almost surely, 2^2158674091 is an apocalyptic number.

2158674091 is a deficient number, since it is larger than the sum of its proper divisors (378976853).

2158674091 is a wasteful number, since it uses less digits than its factorization.

2158674091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 2158674091 is about 46461.5334551067. The cubic root of 2158674091 is about 1292.3962613296.

The spelling of 2158674091 in words is "two billion, one hundred fifty-eight million, six hundred seventy-four thousand, ninety-one".