91748159 has 2 divisors, whose sum is σ = 91748160. Its totient is φ = 91748158.

The previous prime is 91748047. The next prime is 91748161. The reversal of 91748159 is 95184719.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91748159 - 2¹² = 91744063 is a prime.

Together with 91748161, 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 (91748659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45874079 + 45874080.

It is an arithmetic number, because the mean of its divisors is an integer number (45874080).

Almost surely, 2^91748159 is an apocalyptic number.

91748159 is a deficient number, since it is larger than the sum of its proper divisors (1).

91748159 is an equidigital number, since it uses as much as digits as its factorization.

91748159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 91748159 is about 9578.5259304342. The cubic root of 91748159 is about 451.0234467156.

The spelling of 91748159 in words is "ninety-one million, seven hundred forty-eight thousand, one hundred fifty-nine".