1316681688 has 192 divisors, whose sum is σ = 4088355840. Its totient is φ = 345931776.

The previous prime is 1316681687. The next prime is 1316681699. The reversal of 1316681688 is 8861866131.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316681687) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2281656 + ... + 2282232.

It is an arithmetic number, because the mean of its divisors is an integer number (21293520).

Almost surely, 2^1316681688 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 1316681688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2044177920).

1316681688 is an abundant number, since it is smaller than the sum of its proper divisors (2771674152).

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

1316681688 is a wasteful number, since it uses less digits than its factorization.

1316681688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 653 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 1316681688 is about 36286.1087470123. The cubic root of 1316681688 is about 1096.0413321120.

The spelling of 1316681688 in words is "one billion, three hundred sixteen million, six hundred eighty-one thousand, six hundred eighty-eight".