1316632608 has 144 divisors (see below), whose sum is σ = 3943779840. Its totient is φ = 415844352.

The previous prime is 1316632561. The next prime is 1316632621. The reversal of 1316632608 is 8062366131.

1316632608 is a `hidden beast` number, since 1 + 3 + 16 + 6 + 32 + 608 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 747633 + ... + 749391.

It is an arithmetic number, because the mean of its divisors is an integer number (27387360).

Almost surely, 2^1316632608 is an apocalyptic number.

1316632608 is a gapful number since it is divisible by the number (18) 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 1316632608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1971889920).

1316632608 is an abundant number, since it is smaller than the sum of its proper divisors (2627147232).

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

1316632608 is a wasteful number, since it uses less digits than its factorization.

1316632608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1316632608 is about 36285.4324488492. The cubic root of 1316632608 is about 1096.0277134378.

Adding to 1316632608 its reverse (8062366131), we get a palindrome (9378998739).

The spelling of 1316632608 in words is "one billion, three hundred sixteen million, six hundred thirty-two thousand, six hundred eight".