269121613 has 2 divisors, whose sum is σ = 269121614. Its totient is φ = 269121612.

The previous prime is 269121533. The next prime is 269121617. The reversal of 269121613 is 316121962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268369924 + 751689 = 16382^2 + 867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-269121613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269121617) 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, 134560806 + 134560807.

It is an arithmetic number, because the mean of its divisors is an integer number (134560807).

Almost surely, 2^269121613 is an apocalyptic number.

It is an amenable number.

269121613 is a deficient number, since it is larger than the sum of its proper divisors (1).

269121613 is an equidigital number, since it uses as much as digits as its factorization.

269121613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 269121613 is about 16404.9264856628. The cubic root of 269121613 is about 645.6287465121.

The spelling of 269121613 in words is "two hundred sixty-nine million, one hundred twenty-one thousand, six hundred thirteen".