80118191 has 2 divisors, whose sum is σ = 80118192. Its totient is φ = 80118190.

The previous prime is 80118179. The next prime is 80118239. The reversal of 80118191 is 19181108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80118191 - 2¹⁸ = 79856047 is a prime.

It is a super-2 number, since 2×80118191² = 12837849058224962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80118151) 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 as a sum of consecutive naturals, namely, 40059095 + 40059096.

It is an arithmetic number, because the mean of its divisors is an integer number (40059096).

Almost surely, 2^80118191 is an apocalyptic number.

80118191 is a deficient number, since it is larger than the sum of its proper divisors (1).

80118191 is an equidigital number, since it uses as much as digits as its factorization.

80118191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 29.

The square root of 80118191 is about 8950.8765492548. The cubic root of 80118191 is about 431.0990292524.

Adding to 80118191 its reverse (19181108), we get a palindrome (99299299).

The spelling of 80118191 in words is "eighty million, one hundred eighteen thousand, one hundred ninety-one".