8163890671 has 4 divisors (see below), whose sum is σ = 8644119552. Its totient is φ = 7683661792.

The previous prime is 8163890663. The next prime is 8163890681. The reversal of 8163890671 is 1760983618.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8163890671 - 2³ = 8163890663 is a prime.

It is a super-2 number, since 2×8163890671² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8163890681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240114415 + ... + 240114448.

It is an arithmetic number, because the mean of its divisors is an integer number (2161029888).

Almost surely, 2^8163890671 is an apocalyptic number.

8163890671 is a deficient number, since it is larger than the sum of its proper divisors (480228881).

8163890671 is a wasteful number, since it uses less digits than its factorization.

8163890671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480228880.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 8163890671 is about 90354.2509846659. The cubic root of 8163890671 is about 2013.5653386871.

The spelling of 8163890671 in words is "eight billion, one hundred sixty-three million, eight hundred ninety thousand, six hundred seventy-one".