2085722291 has 2 divisors, whose sum is σ = 2085722292. Its totient is φ = 2085722290.

The previous prime is 2085722281. The next prime is 2085722297. The reversal of 2085722291 is 1922275802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2085722291 - 2²⁶ = 2018613427 is a prime.

It is not a weakly prime, because it can be changed into another prime (2085722297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042861145 + 1042861146.

It is an arithmetic number, because the mean of its divisors is an integer number (1042861146).

Almost surely, 2^2085722291 is an apocalyptic number.

2085722291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2085722291 is an equidigital number, since it uses as much as digits as its factorization.

2085722291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2085722291 is about 45669.7086809189. The cubic root of 2085722291 is about 1277.6703823871.

The spelling of 2085722291 in words is "two billion, eighty-five million, seven hundred twenty-two thousand, two hundred ninety-one".