2158771095 has 160 divisors (see below), whose sum is σ = 4478664960. Its totient is φ = 985374720.

The previous prime is 2158771093. The next prime is 2158771103. The reversal of 2158771095 is 5901778512.

It is not a de Polignac number, because 2158771095 - 2¹ = 2158771093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Together with 2319893865 it forms an amicable pair .

It is a self number, because there is not a number n which added to its sum of digits gives 2158771095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158771093) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7965810 + ... + 7966080.

It is an arithmetic number, because the mean of its divisors is an integer number (27991656).

Almost surely, 2^2158771095 is an apocalyptic number.

2158771095 is an abundant number, since it is smaller than the sum of its proper divisors (2319893865).

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

2158771095 is a wasteful number, since it uses less digits than its factorization.

2158771095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 45.

The square root of 2158771095 is about 46462.5773607104. The cubic root of 2158771095 is about 1292.4156197759.

The spelling of 2158771095 in words is "two billion, one hundred fifty-eight million, seven hundred seventy-one thousand, ninety-five".