1630331473 has 2 divisors, whose sum is σ = 1630331474. Its totient is φ = 1630331472.

The previous prime is 1630331377. The next prime is 1630331491. The reversal of 1630331473 is 3741330361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286154769 + 344176704 = 35863^2 + 18552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630331473 - 2²⁵ = 1596777041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630331273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815165736 + 815165737.

It is an arithmetic number, because the mean of its divisors is an integer number (815165737).

Almost surely, 2^1630331473 is an apocalyptic number.

It is an amenable number.

1630331473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630331473 is an equidigital number, since it uses as much as digits as its factorization.

1630331473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 1630331473 is about 40377.3633735538. The cubic root of 1630331473 is about 1176.9516918027.

The spelling of 1630331473 in words is "one billion, six hundred thirty million, three hundred thirty-one thousand, four hundred seventy-three".