26491163 has 2 divisors, whose sum is σ = 26491164. Its totient is φ = 26491162.

The previous prime is 26491159. The next prime is 26491169. The reversal of 26491163 is 36119462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26491163 - 2² = 26491159 is a prime.

It is not a weakly prime, because it can be changed into another prime (26491169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13245581 + 13245582.

It is an arithmetic number, because the mean of its divisors is an integer number (13245582).

Almost surely, 2^26491163 is an apocalyptic number.

26491163 is a deficient number, since it is larger than the sum of its proper divisors (1).

26491163 is an equidigital number, since it uses as much as digits as its factorization.

26491163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 26491163 is about 5146.9566736082. The cubic root of 26491163 is about 298.1034541636.

The spelling of 26491163 in words is "twenty-six million, four hundred ninety-one thousand, one hundred sixty-three".