1630047361 has 2 divisors, whose sum is σ = 1630047362. Its totient is φ = 1630047360.

The previous prime is 1630047359. The next prime is 1630047379. The reversal of 1630047361 is 1637400361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1555829136 + 74218225 = 39444^2 + 8615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630047361 - 2¹ = 1630047359 is a prime.

Together with 1630047359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1630047961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815023680 + 815023681.

It is an arithmetic number, because the mean of its divisors is an integer number (815023681).

Almost surely, 2^1630047361 is an apocalyptic number.

It is an amenable number.

1630047361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630047361 is an equidigital number, since it uses as much as digits as its factorization.

1630047361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1630047361 is about 40373.8450113437. The cubic root of 1630047361 is about 1176.8833201186.

The spelling of 1630047361 in words is "one billion, six hundred thirty million, forty-seven thousand, three hundred sixty-one".