1630709648 has 10 divisors (see below), whose sum is σ = 3159499974. Its totient is φ = 815354816.

The previous prime is 1630709623. The next prime is 1630709659. The reversal of 1630709648 is 8469070361.

It can be written as a sum of positive squares in only one way, i.e., 1591371664 + 39337984 = 39892^2 + 6272^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1630709599 and 1630709608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50959661 + ... + 50959692.

Almost surely, 2^1630709648 is an apocalyptic number.

It is an amenable number.

1630709648 is a deficient number, since it is larger than the sum of its proper divisors (1528790326).

1630709648 is a wasteful number, since it uses less digits than its factorization.

1630709648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101919361 (or 101919355 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1630709648 is about 40382.0461096265. The cubic root of 1630709648 is about 1177.0426874689.

The spelling of 1630709648 in words is "one billion, six hundred thirty million, seven hundred nine thousand, six hundred forty-eight".