80163491 has 4 divisors (see below), whose sum is σ = 80204592. Its totient is φ = 80122392.

The previous prime is 80163469. The next prime is 80163541. The reversal of 80163491 is 19436108.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80163491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80163191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17471 + ... + 21576.

It is an arithmetic number, because the mean of its divisors is an integer number (20051148).

Almost surely, 2^80163491 is an apocalyptic number.

80163491 is a deficient number, since it is larger than the sum of its proper divisors (41101).

80163491 is a wasteful number, since it uses less digits than its factorization.

80163491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41100.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 80163491 is about 8953.4066700893. The cubic root of 80163491 is about 431.1802638481.

Adding to 80163491 its reverse (19436108), we get a palindrome (99599599).

The spelling of 80163491 in words is "eighty million, one hundred sixty-three thousand, four hundred ninety-one".