2158253871 has 32 divisors (see below), whose sum is σ = 3092302080. Its totient is φ = 1334880000.

The previous prime is 2158253861. The next prime is 2158253873. The reversal of 2158253871 is 1783528512.

It is not a de Polignac number, because 2158253871 - 2¹⁹ = 2157729583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158253873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 871491 + ... + 873963.

It is an arithmetic number, because the mean of its divisors is an integer number (96634440).

Almost surely, 2^2158253871 is an apocalyptic number.

2158253871 is a deficient number, since it is larger than the sum of its proper divisors (934048209).

2158253871 is a wasteful number, since it uses less digits than its factorization.

2158253871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807.

The product of its digits is 134400, while the sum is 42.

The square root of 2158253871 is about 46457.0109994175. The cubic root of 2158253871 is about 1292.3123941071.

The spelling of 2158253871 in words is "two billion, one hundred fifty-eight million, two hundred fifty-three thousand, eight hundred seventy-one".