2291773129 has 2 divisors, whose sum is σ = 2291773130. Its totient is φ = 2291773128.

The previous prime is 2291773097. The next prime is 2291773139. The reversal of 2291773129 is 9213771922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2277484729 + 14288400 = 47723^2 + 3780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291773129 - 2⁵ = 2291773097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2291773139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145886564 + 1145886565.

It is an arithmetic number, because the mean of its divisors is an integer number (1145886565).

Almost surely, 2^2291773129 is an apocalyptic number.

It is an amenable number.

2291773129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291773129 is an equidigital number, since it uses as much as digits as its factorization.

2291773129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 43.

The square root of 2291773129 is about 47872.4673377088. The cubic root of 2291773129 is about 1318.4303980739.

The spelling of 2291773129 in words is "two billion, two hundred ninety-one million, seven hundred seventy-three thousand, one hundred twenty-nine".