1308981336 has 128 divisors (see below), whose sum is σ = 3725568000. Its totient is φ = 380210688.

The previous prime is 1308981319. The next prime is 1308981343. The reversal of 1308981336 is 6331898031.

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 31 ways as a sum of consecutive naturals, for example, 565750 + ... + 568058.

It is an arithmetic number, because the mean of its divisors is an integer number (29106000).

Almost surely, 2^1308981336 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 1308981336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862784000).

1308981336 is an abundant number, since it is smaller than the sum of its proper divisors (2416586664).

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

1308981336 is a wasteful number, since it uses less digits than its factorization.

1308981336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1308981336 is about 36179.8470975210. The cubic root of 1308981336 is about 1093.9004930511.

The spelling of 1308981336 in words is "one billion, three hundred eight million, nine hundred eighty-one thousand, three hundred thirty-six".