2291937929 has 2 divisors, whose sum is σ = 2291937930. Its totient is φ = 2291937928.

The previous prime is 2291937919. The next prime is 2291937937. The reversal of 2291937929 is 9297391922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2024550025 + 267387904 = 44995^2 + 16352^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291937929 - 2²⁸ = 2023502473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2291937919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145968964 + 1145968965.

It is an arithmetic number, because the mean of its divisors is an integer number (1145968965).

Almost surely, 2^2291937929 is an apocalyptic number.

It is an amenable number.

2291937929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291937929 is an equidigital number, since it uses as much as digits as its factorization.

2291937929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 53.

The square root of 2291937929 is about 47874.1885466480. The cubic root of 2291937929 is about 1318.4619998236.

The spelling of 2291937929 in words is "two billion, two hundred ninety-one million, nine hundred thirty-seven thousand, nine hundred twenty-nine".