2259801997 has 2 divisors, whose sum is σ = 2259801998. Its totient is φ = 2259801996.

The previous prime is 2259801991. The next prime is 2259802037. The reversal of 2259801997 is 7991089522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1482173001 + 777628996 = 38499^2 + 27886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2259801997 - 2²³ = 2251413389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2259801991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129900998 + 1129900999.

It is an arithmetic number, because the mean of its divisors is an integer number (1129900999).

Almost surely, 2^2259801997 is an apocalyptic number.

It is an amenable number.

2259801997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2259801997 is an equidigital number, since it uses as much as digits as its factorization.

2259801997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 2259801997 is about 47537.3747381994. The cubic root of 2259801997 is about 1312.2707923497.

The spelling of 2259801997 in words is "two billion, two hundred fifty-nine million, eight hundred one thousand, nine hundred ninety-seven".