9671895681 has 16 divisors (see below), whose sum is σ = 14826384384. Its totient is φ = 5493700944.

The previous prime is 9671895677. The next prime is 9671895683. The reversal of 9671895681 is 1865981769.

It is not a de Polignac number, because 9671895681 - 2² = 9671895677 is a prime.

It is a super-2 number, since 2×9671895681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9671895683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375435 + ... + 1382448.

It is an arithmetic number, because the mean of its divisors is an integer number (926649024).

Almost surely, 2^9671895681 is an apocalyptic number.

It is an amenable number.

9671895681 is a deficient number, since it is larger than the sum of its proper divisors (5154488703).

9671895681 is a wasteful number, since it uses less digits than its factorization.

9671895681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758060.

The product of its digits is 6531840, while the sum is 60.

The square root of 9671895681 is about 98345.7964582117. The cubic root of 9671895681 is about 2130.6095429784.

The spelling of 9671895681 in words is "nine billion, six hundred seventy-one million, eight hundred ninety-five thousand, six hundred eighty-one".