1630471613 has 2 divisors, whose sum is σ = 1630471614. Its totient is φ = 1630471612.

The previous prime is 1630471607. The next prime is 1630471639. The reversal of 1630471613 is 3161740361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123456324 + 507015289 = 33518^2 + 22517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630471613 - 2⁴ = 1630471597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1630471613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630471603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815235806 + 815235807.

It is an arithmetic number, because the mean of its divisors is an integer number (815235807).

Almost surely, 2^1630471613 is an apocalyptic number.

It is an amenable number.

1630471613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630471613 is an equidigital number, since it uses as much as digits as its factorization.

1630471613 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 32.

The square root of 1630471613 is about 40379.0987145578. The cubic root of 1630471613 is about 1176.9854136331.

The spelling of 1630471613 in words is "one billion, six hundred thirty million, four hundred seventy-one thousand, six hundred thirteen".