26161789 has 2 divisors, whose sum is σ = 26161790. Its totient is φ = 26161788.

The previous prime is 26161777. The next prime is 26161801. The reversal of 26161789 is 98716162.

It is a balanced prime because it is at equal distance from previous prime (26161777) and next prime (26161801).

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 324900 = 5083^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 26161789 - 2⁷ = 26161661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26161739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13080894 + 13080895.

It is an arithmetic number, because the mean of its divisors is an integer number (13080895).

Almost surely, 2^26161789 is an apocalyptic number.

It is an amenable number.

26161789 is a deficient number, since it is larger than the sum of its proper divisors (1).

26161789 is an equidigital number, since it uses as much as digits as its factorization.

26161789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 26161789 is about 5114.8596266173. The cubic root of 26161789 is about 296.8628229022.

The spelling of 26161789 in words is "twenty-six million, one hundred sixty-one thousand, seven hundred eighty-nine".