1630983808 has 64 divisors (see below), whose sum is σ = 3520566720. Its totient is φ = 749629440.

The previous prime is 1630983733. The next prime is 1630983821. The reversal of 1630983808 is 8083890361.

It is a tau number, because it is divible by the number of its divisors (64).

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, 84853 + ... + 102283.

It is an arithmetic number, because the mean of its divisors is an integer number (55008855).

Almost surely, 2^1630983808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630983808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1760283360).

1630983808 is an abundant number, since it is smaller than the sum of its proper divisors (1889582912).

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

1630983808 is a wasteful number, since it uses less digits than its factorization.

1630983808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17505 (or 17493 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1630983808 is about 40385.4405448300. The cubic root of 1630983808 is about 1177.1086464704.

The spelling of 1630983808 in words is "one billion, six hundred thirty million, nine hundred eighty-three thousand, eight hundred eight".