1630020349 has 2 divisors, whose sum is σ = 1630020350. Its totient is φ = 1630020348.

The previous prime is 1630020341. The next prime is 1630020389. The reversal of 1630020349 is 9430200361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1606807225 + 23213124 = 40085^2 + 4818^2 .

It is an emirp because it is prime and its reverse (9430200361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630020349 - 2³ = 1630020341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630020341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815010174 + 815010175.

It is an arithmetic number, because the mean of its divisors is an integer number (815010175).

Almost surely, 2^1630020349 is an apocalyptic number.

It is an amenable number.

1630020349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630020349 is an equidigital number, since it uses as much as digits as its factorization.

1630020349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1630020349 is about 40373.5104864563. The cubic root of 1630020349 is about 1176.8768192548.

The spelling of 1630020349 in words is "one billion, six hundred thirty million, twenty thousand, three hundred forty-nine".