91258163 has 2 divisors, whose sum is σ = 91258164. Its totient is φ = 91258162.

The previous prime is 91258151. The next prime is 91258171. The reversal of 91258163 is 36185219.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91258163 - 2⁴ = 91258147 is a prime.

It is not a weakly prime, because it can be changed into another prime (91258763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45629081 + 45629082.

It is an arithmetic number, because the mean of its divisors is an integer number (45629082).

Almost surely, 2^91258163 is an apocalyptic number.

91258163 is a deficient number, since it is larger than the sum of its proper divisors (1).

91258163 is an equidigital number, since it uses as much as digits as its factorization.

91258163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 91258163 is about 9552.9138486642. The cubic root of 91258163 is about 450.2190916674.

The spelling of 91258163 in words is "ninety-one million, two hundred fifty-eight thousand, one hundred sixty-three".