1630931461 has 2 divisors, whose sum is σ = 1630931462. Its totient is φ = 1630931460.

The previous prime is 1630931437. The next prime is 1630931479. The reversal of 1630931461 is 1641390361.

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., 1151584225 + 479347236 = 33935^2 + 21894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630931461 - 2⁵ = 1630931429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630931761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815465730 + 815465731.

It is an arithmetic number, because the mean of its divisors is an integer number (815465731).

Almost surely, 2^1630931461 is an apocalyptic number.

It is an amenable number.

1630931461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630931461 is an equidigital number, since it uses as much as digits as its factorization.

1630931461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1630931461 is about 40384.7924471576. The cubic root of 1630931461 is about 1177.0960530968.

The spelling of 1630931461 in words is "one billion, six hundred thirty million, nine hundred thirty-one thousand, four hundred sixty-one".