26319091 has 2 divisors, whose sum is σ = 26319092. Its totient is φ = 26319090.

The previous prime is 26319049. The next prime is 26319101. The reversal of 26319091 is 19091362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26319091 - 2¹³ = 26310899 is a prime.

It is not a weakly prime, because it can be changed into another prime (26319191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13159545 + 13159546.

It is an arithmetic number, because the mean of its divisors is an integer number (13159546).

Almost surely, 2^26319091 is an apocalyptic number.

26319091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26319091 is an equidigital number, since it uses as much as digits as its factorization.

26319091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 26319091 is about 5130.2135433138. The cubic root of 26319091 is about 297.4566130264.

The spelling of 26319091 in words is "twenty-six million, three hundred nineteen thousand, ninety-one".