1630663776 has 144 divisors (see below), whose sum is σ = 5314143744. Its totient is φ = 464631552.

The previous prime is 1630663763. The next prime is 1630663819. The reversal of 1630663776 is 6773660361.

1630663776 is a `hidden beast` number, since 1 + 6 + 3 + 0 + 6 + 637 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 932535 + ... + 934281.

It is an arithmetic number, because the mean of its divisors is an integer number (36903776).

Almost surely, 2^1630663776 is an apocalyptic number.

1630663776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630663776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657071872).

1630663776 is an abundant number, since it is smaller than the sum of its proper divisors (3683479968).

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

1630663776 is a wasteful number, since it uses less digits than its factorization.

1630663776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233 (or 2222 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The square root of 1630663776 is about 40381.4781304499. The cubic root of 1630663776 is about 1177.0316505953.

The spelling of 1630663776 in words is "one billion, six hundred thirty million, six hundred sixty-three thousand, seven hundred seventy-six".