2290821769 has 2 divisors, whose sum is σ = 2290821770. Its totient is φ = 2290821768.

The previous prime is 2290821719. The next prime is 2290821779. The reversal of 2290821769 is 9671280922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1156816144 + 1134005625 = 34012^2 + 33675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2290821769 is a prime.

It is a super-2 number, since 2×2290821769² = 10495728754648578722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2290821719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145410884 + 1145410885.

It is an arithmetic number, because the mean of its divisors is an integer number (1145410885).

Almost surely, 2^2290821769 is an apocalyptic number.

It is an amenable number.

2290821769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290821769 is an equidigital number, since it uses as much as digits as its factorization.

2290821769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 2290821769 is about 47862.5299059713. The cubic root of 2290821769 is about 1318.2479373802.

The spelling of 2290821769 in words is "two billion, two hundred ninety million, eight hundred twenty-one thousand, seven hundred sixty-nine".