1630280761 has 2 divisors, whose sum is σ = 1630280762. Its totient is φ = 1630280760.

The previous prime is 1630280753. The next prime is 1630280803. The reversal of 1630280761 is 1670820361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1614432400 + 15848361 = 40180^2 + 3981^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630280761 - 2³ = 1630280753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630280741) 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, 815140380 + 815140381.

It is an arithmetic number, because the mean of its divisors is an integer number (815140381).

Almost surely, 2^1630280761 is an apocalyptic number.

It is an amenable number.

1630280761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630280761 is an equidigital number, since it uses as much as digits as its factorization.

1630280761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1630280761 is about 40376.7353930453. The cubic root of 1630280761 is about 1176.9394885188.

The spelling of 1630280761 in words is "one billion, six hundred thirty million, two hundred eighty thousand, seven hundred sixty-one".