135091169 has 2 divisors, whose sum is σ = 135091170. Its totient is φ = 135091168.

The previous prime is 135091157. The next prime is 135091183. The reversal of 135091169 is 961190531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94322944 + 40768225 = 9712^2 + 6385^2 .

It is a cyclic number.

It is not a de Polignac number, because 135091169 - 2⁴ = 135091153 is a prime.

It is a super-2 number, since 2×135091169² = 36499247883573122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135091109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67545584 + 67545585.

It is an arithmetic number, because the mean of its divisors is an integer number (67545585).

Almost surely, 2^135091169 is an apocalyptic number.

It is an amenable number.

135091169 is a deficient number, since it is larger than the sum of its proper divisors (1).

135091169 is an equidigital number, since it uses as much as digits as its factorization.

135091169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 135091169 is about 11622.8726655677. The cubic root of 135091169 is about 513.1082371264.

The spelling of 135091169 in words is "one hundred thirty-five million, ninety-one thousand, one hundred sixty-nine".