1630306241 has 2 divisors, whose sum is σ = 1630306242. Its totient is φ = 1630306240.

The previous prime is 1630306207. The next prime is 1630306261. The reversal of 1630306241 is 1426030361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1609694641 + 20611600 = 40121^2 + 4540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630306241 - 2⁶ = 1630306177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1630306241.

It is not a weakly prime, because it can be changed into another prime (1630306261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815153120 + 815153121.

It is an arithmetic number, because the mean of its divisors is an integer number (815153121).

Almost surely, 2^1630306241 is an apocalyptic number.

It is an amenable number.

1630306241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630306241 is an equidigital number, since it uses as much as digits as its factorization.

1630306241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1630306241 is about 40377.0509200462. The cubic root of 1630306241 is about 1176.9456200316.

The spelling of 1630306241 in words is "one billion, six hundred thirty million, three hundred six thousand, two hundred forty-one".