26169491 has 2 divisors, whose sum is σ = 26169492. Its totient is φ = 26169490.

The previous prime is 26169431. The next prime is 26169497. The reversal of 26169491 is 19496162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26169491 - 2¹⁸ = 25907347 is a prime.

It is not a weakly prime, because it can be changed into another prime (26169497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13084745 + 13084746.

It is an arithmetic number, because the mean of its divisors is an integer number (13084746).

Almost surely, 2^26169491 is an apocalyptic number.

26169491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26169491 is an equidigital number, since it uses as much as digits as its factorization.

26169491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 26169491 is about 5115.6124755497. The cubic root of 26169491 is about 296.8919520662.

The spelling of 26169491 in words is "twenty-six million, one hundred sixty-nine thousand, four hundred ninety-one".