26161859 has 2 divisors, whose sum is σ = 26161860. Its totient is φ = 26161858.

The previous prime is 26161831. The next prime is 26161871. The reversal of 26161859 is 95816162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26161859 - 2¹² = 26157763 is a prime.

It is not a weakly prime, because it can be changed into another prime (26161259) 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, 13080929 + 13080930.

It is an arithmetic number, because the mean of its divisors is an integer number (13080930).

Almost surely, 2^26161859 is an apocalyptic number.

26161859 is a deficient number, since it is larger than the sum of its proper divisors (1).

26161859 is an equidigital number, since it uses as much as digits as its factorization.

26161859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 26161859 is about 5114.8664694203. The cubic root of 26161859 is about 296.8630876698.

The spelling of 26161859 in words is "twenty-six million, one hundred sixty-one thousand, eight hundred fifty-nine".