2161371126 has 16 divisors (see below), whose sum is σ = 4577021424. Its totient is φ = 678077184.

The previous prime is 2161371071. The next prime is 2161371127. The reversal of 2161371126 is 6211731612.

It is a junction number, because it is equal to n+sod(n) for n = 2161371093 and 2161371102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161371127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10594855 + ... + 10595058.

It is an arithmetic number, because the mean of its divisors is an integer number (286063839).

Almost surely, 2^2161371126 is an apocalyptic number.

2161371126 is an abundant number, since it is smaller than the sum of its proper divisors (2415650298).

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

2161371126 is a wasteful number, since it uses less digits than its factorization.

2161371126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21189935.

The product of its digits is 3024, while the sum is 30.

The square root of 2161371126 is about 46490.5487814459. The cubic root of 2161371126 is about 1292.9342748146.

The spelling of 2161371126 in words is "two billion, one hundred sixty-one million, three hundred seventy-one thousand, one hundred twenty-six".