2161037069 has 2 divisors, whose sum is σ = 2161037070. Its totient is φ = 2161037068.

The previous prime is 2161037023. The next prime is 2161037071. The reversal of 2161037069 is 9607301612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2129822500 + 31214569 = 46150^2 + 5587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161037069 is a prime.

It is a super-2 number, since 2×2161037069² = 9340162427184221522, which contains 22 as substring.

Together with 2161037071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161037089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080518534 + 1080518535.

It is an arithmetic number, because the mean of its divisors is an integer number (1080518535).

Almost surely, 2^2161037069 is an apocalyptic number.

It is an amenable number.

2161037069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161037069 is an equidigital number, since it uses as much as digits as its factorization.

2161037069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2161037069 is about 46486.9559016290. The cubic root of 2161037069 is about 1292.8676603103.

The spelling of 2161037069 in words is "two billion, one hundred sixty-one million, thirty-seven thousand, sixty-nine".