1630695673 has 2 divisors, whose sum is σ = 1630695674. Its totient is φ = 1630695672.

The previous prime is 1630695623. The next prime is 1630695683. The reversal of 1630695673 is 3765960361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1496761344 + 133934329 = 38688^2 + 11573^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630695673 - 2²⁵ = 1597141241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630695623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815347836 + 815347837.

It is an arithmetic number, because the mean of its divisors is an integer number (815347837).

Almost surely, 2^1630695673 is an apocalyptic number.

It is an amenable number.

1630695673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630695673 is an equidigital number, since it uses as much as digits as its factorization.

1630695673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 46.

The square root of 1630695673 is about 40381.8730744377. The cubic root of 1630695673 is about 1177.0393250844.

The spelling of 1630695673 in words is "one billion, six hundred thirty million, six hundred ninety-five thousand, six hundred seventy-three".