80391163 has 4 divisors (see below), whose sum is σ = 81004968. Its totient is φ = 79777360.

The previous prime is 80391151. The next prime is 80391167. The reversal of 80391163 is 36119308.

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 80391163 - 2⁵ = 80391131 is a prime.

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (80391167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306706 + ... + 306967.

It is an arithmetic number, because the mean of its divisors is an integer number (20251242).

Almost surely, 2^80391163 is an apocalyptic number.

80391163 is a deficient number, since it is larger than the sum of its proper divisors (613805).

80391163 is a wasteful number, since it uses less digits than its factorization.

80391163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613804.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 80391163 is about 8966.1119221210. Note that the first 3 decimals coincide. The cubic root of 80391163 is about 431.5880757791.

The spelling of 80391163 in words is "eighty million, three hundred ninety-one thousand, one hundred sixty-three".