26813491 has 2 divisors, whose sum is σ = 26813492. Its totient is φ = 26813490.

The previous prime is 26813483. The next prime is 26813497. The reversal of 26813491 is 19431862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26813491 - 2³ = 26813483 is a prime.

It is not a weakly prime, because it can be changed into another prime (26813497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13406745 + 13406746.

It is an arithmetic number, because the mean of its divisors is an integer number (13406746).

Almost surely, 2^26813491 is an apocalyptic number.

26813491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26813491 is an equidigital number, since it uses as much as digits as its factorization.

26813491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 26813491 is about 5178.1744852795. The cubic root of 26813491 is about 299.3076292309.

The spelling of 26813491 in words is "twenty-six million, eight hundred thirteen thousand, four hundred ninety-one".