5681191698 has 192 divisors, whose sum is σ = 15777216000. Its totient is φ = 1437004800.

The previous prime is 5681191687. The next prime is 5681191717. The reversal of 5681191698 is 8961911865.

5681191698 is a `hidden beast` number, since 568 + 1 + 19 + 1 + 69 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9452598 + ... + 9453198.

It is an arithmetic number, because the mean of its divisors is an integer number (82173000).

Almost surely, 2^5681191698 is an apocalyptic number.

5681191698 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5681191698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7888608000).

5681191698 is an abundant number, since it is smaller than the sum of its proper divisors (10096024302).

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

5681191698 is a wasteful number, since it uses less digits than its factorization.

5681191698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 854 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 5681191698 is about 75373.6804063594. The cubic root of 5681191698 is about 1784.3490524772.

The spelling of 5681191698 in words is "five billion, six hundred eighty-one million, one hundred ninety-one thousand, six hundred ninety-eight".