26191093 has 2 divisors, whose sum is σ = 26191094. Its totient is φ = 26191092.

The previous prime is 26191073. The next prime is 26191129. The reversal of 26191093 is 39019162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19342404 + 6848689 = 4398^2 + 2617^2 .

It is a cyclic number.

It is not a de Polignac number, because 26191093 - 2²¹ = 24093941 is a prime.

It is a super-3 number, since 3×26191093³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26191073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13095546 + 13095547.

It is an arithmetic number, because the mean of its divisors is an integer number (13095547).

Almost surely, 2^26191093 is an apocalyptic number.

It is an amenable number.

26191093 is a deficient number, since it is larger than the sum of its proper divisors (1).

26191093 is an equidigital number, since it uses as much as digits as its factorization.

26191093 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 26191093 is about 5117.7234196467. The cubic root of 26191093 is about 296.9736209080.

The spelling of 26191093 in words is "twenty-six million, one hundred ninety-one thousand, ninety-three".