26242189 has 2 divisors, whose sum is σ = 26242190. Its totient is φ = 26242188.

The previous prime is 26242163. The next prime is 26242199. The reversal of 26242189 is 98124262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25704900 + 537289 = 5070^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 26242189 - 2⁷ = 26242061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26242109) 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, 13121094 + 13121095.

It is an arithmetic number, because the mean of its divisors is an integer number (13121095).

Almost surely, 2^26242189 is an apocalyptic number.

It is an amenable number.

26242189 is a deficient number, since it is larger than the sum of its proper divisors (1).

26242189 is an equidigital number, since it uses as much as digits as its factorization.

26242189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 26242189 is about 5122.7130507183. The cubic root of 26242189 is about 297.1666166349.

The spelling of 26242189 in words is "twenty-six million, two hundred forty-two thousand, one hundred eighty-nine".