1630442213 has 2 divisors, whose sum is σ = 1630442214. Its totient is φ = 1630442212.

The previous prime is 1630442207. The next prime is 1630442243. The reversal of 1630442213 is 3122440361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1079976769 + 550465444 = 32863^2 + 23462^2 .

It is an emirp because it is prime and its reverse (3122440361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630442213 - 2²⁰ = 1629393637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630442243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815221106 + 815221107.

It is an arithmetic number, because the mean of its divisors is an integer number (815221107).

Almost surely, 2^1630442213 is an apocalyptic number.

It is an amenable number.

1630442213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630442213 is an equidigital number, since it uses as much as digits as its factorization.

1630442213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1630442213 is about 40378.7346631863. The cubic root of 1630442213 is about 1176.9783392834.

Adding to 1630442213 its reverse (3122440361), we get a palindrome (4752882574).

The spelling of 1630442213 in words is "one billion, six hundred thirty million, four hundred forty-two thousand, two hundred thirteen".