91826491 has 2 divisors, whose sum is σ = 91826492. Its totient is φ = 91826490.

The previous prime is 91826447. The next prime is 91826513. The reversal of 91826491 is 19462819.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91826491 - 2¹¹ = 91824443 is a prime.

It is not a weakly prime, because it can be changed into another prime (91826431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45913245 + 45913246.

It is an arithmetic number, because the mean of its divisors is an integer number (45913246).

Almost surely, 2^91826491 is an apocalyptic number.

91826491 is a deficient number, since it is larger than the sum of its proper divisors (1).

91826491 is an equidigital number, since it uses as much as digits as its factorization.

91826491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 91826491 is about 9582.6139961912. The cubic root of 91826491 is about 451.1517672520.

The spelling of 91826491 in words is "ninety-one million, eight hundred twenty-six thousand, four hundred ninety-one".