1630481568 has 48 divisors (see below), whose sum is σ = 4379560416. Its totient is φ = 530853120.

The previous prime is 1630481539. The next prime is 1630481591. The reversal of 1630481568 is 8651840361.

It is a tau number, because it is divible by the number of its divisors (48).

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 in 7 ways as a sum of consecutive naturals, for example, 193363 + ... + 201618.

It is an arithmetic number, because the mean of its divisors is an integer number (91240842).

Almost surely, 2^1630481568 is an apocalyptic number.

It is an amenable number.

1630481568 is an abundant number, since it is smaller than the sum of its proper divisors (2749078848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630481568 is a wasteful number, since it uses less digits than its factorization.

1630481568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395037 (or 395029 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1630481568 is about 40379.2219835895. The cubic root of 1630481568 is about 1176.9878090271.

The spelling of 1630481568 in words is "one billion, six hundred thirty million, four hundred eighty-one thousand, five hundred sixty-eight".