1790222251 has 2 divisors, whose sum is σ = 1790222252. Its totient is φ = 1790222250.

The previous prime is 1790222221. The next prime is 1790222257. The reversal of 1790222251 is 1522220971.

It is a strong prime.

It is an emirp because it is prime and its reverse (1522220971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1790222251 - 2⁵ = 1790222219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1790222257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895111125 + 895111126.

It is an arithmetic number, because the mean of its divisors is an integer number (895111126).

Almost surely, 2^1790222251 is an apocalyptic number.

1790222251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790222251 is an equidigital number, since it uses as much as digits as its factorization.

1790222251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1790222251 is about 42311.0180804008. The cubic root of 1790222251 is about 1214.2337971496.

The spelling of 1790222251 in words is "one billion, seven hundred ninety million, two hundred twenty-two thousand, two hundred fifty-one".