8391651841 has 8 divisors (see below), whose sum is σ = 8461721664. Its totient is φ = 8321673360.

The previous prime is 8391651811. The next prime is 8391651887. The reversal of 8391651841 is 1481561938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8391651841 - 2¹⁵ = 8391619073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8391651791 and 8391651800.

It is not an unprimeable number, because it can be changed into a prime (8391651811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168300 + ... + 212386.

It is an arithmetic number, because the mean of its divisors is an integer number (1057715208).

Almost surely, 2^8391651841 is an apocalyptic number.

It is an amenable number.

8391651841 is a deficient number, since it is larger than the sum of its proper divisors (70069823).

8391651841 is a wasteful number, since it uses less digits than its factorization.

8391651841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45671.

The product of its digits is 207360, while the sum is 46.

The square root of 8391651841 is about 91605.9596369145. The cubic root of 8391651841 is about 2032.1190746743.

The spelling of 8391651841 in words is "eight billion, three hundred ninety-one million, six hundred fifty-one thousand, eight hundred forty-one".