1338871688 has 64 divisors (see below), whose sum is σ = 3193776000. Its totient is φ = 521626560.

The previous prime is 1338871673. The next prime is 1338871711. The reversal of 1338871688 is 8861788331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8006 + ... + 52362.

It is an arithmetic number, because the mean of its divisors is an integer number (49902750).

Almost surely, 2^1338871688 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 1338871688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596888000).

1338871688 is an abundant number, since it is smaller than the sum of its proper divisors (1854904312).

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

1338871688 is a wasteful number, since it uses less digits than its factorization.

1338871688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44395 (or 44377 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The square root of 1338871688 is about 36590.5956223727. The cubic root of 1338871688 is about 1102.1642481437.

The spelling of 1338871688 in words is "one billion, three hundred thirty-eight million, eight hundred seventy-one thousand, six hundred eighty-eight".