1630558913 has 2 divisors, whose sum is σ = 1630558914. Its totient is φ = 1630558912.

The previous prime is 1630558903. The next prime is 1630558997. The reversal of 1630558913 is 3198550361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1159538704 + 471020209 = 34052^2 + 21703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630558913 - 2¹⁰ = 1630557889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630558903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815279456 + 815279457.

It is an arithmetic number, because the mean of its divisors is an integer number (815279457).

Almost surely, 2^1630558913 is an apocalyptic number.

It is an amenable number.

1630558913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630558913 is an equidigital number, since it uses as much as digits as its factorization.

1630558913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1630558913 is about 40380.1797048998. The cubic root of 1630558913 is about 1177.0064196193.

The spelling of 1630558913 in words is "one billion, six hundred thirty million, five hundred fifty-eight thousand, nine hundred thirteen".