80937191 has 2 divisors, whose sum is σ = 80937192. Its totient is φ = 80937190.

The previous prime is 80937163. The next prime is 80937193. The reversal of 80937191 is 19173908.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80937191 is a prime.

Together with 80937193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80937193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40468595 + 40468596.

It is an arithmetic number, because the mean of its divisors is an integer number (40468596).

Almost surely, 2^80937191 is an apocalyptic number.

80937191 is a deficient number, since it is larger than the sum of its proper divisors (1).

80937191 is an equidigital number, since it uses as much as digits as its factorization.

80937191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 80937191 is about 8996.5099344135. The cubic root of 80937191 is about 432.5630072929.

The spelling of 80937191 in words is "eighty million, nine hundred thirty-seven thousand, one hundred ninety-one".