2161992495 has 24 divisors (see below), whose sum is σ = 3745752336. Its totient is φ = 1064364288.

The previous prime is 2161992467. The next prime is 2161992583. The reversal of 2161992495 is 5942991612.

2161992495 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2161992495 - 2⁶ = 2161992431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423894 + ... + 428963.

It is an arithmetic number, because the mean of its divisors is an integer number (156073014).

Almost surely, 2^2161992495 is an apocalyptic number.

2161992495 is a deficient number, since it is larger than the sum of its proper divisors (1583759841).

2161992495 is a wasteful number, since it uses less digits than its factorization.

2161992495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852891 (or 852878 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 2161992495 is about 46497.2310465903. The cubic root of 2161992495 is about 1293.0581641199.

The spelling of 2161992495 in words is "two billion, one hundred sixty-one million, nine hundred ninety-two thousand, four hundred ninety-five".