135168869 has 12 divisors (see below), whose sum is σ = 155630880. Its totient is φ = 116409960.

The previous prime is 135168799. The next prime is 135168911. The reversal of 135168869 is 968861531.

It is not a de Polignac number, because 135168869 - 2⁸ = 135168613 is a prime.

It is a super-2 number, since 2×135168869² = 36541246293478322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135168169) 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 in 11 ways as a sum of consecutive naturals, for example, 13049 + ... + 20990.

It is an arithmetic number, because the mean of its divisors is an integer number (12969240).

Almost surely, 2^135168869 is an apocalyptic number.

135168869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

135168869 is a deficient number, since it is larger than the sum of its proper divisors (20462011).

135168869 is a wasteful number, since it uses less digits than its factorization.

135168869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34088 (or 34069 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 135168869 is about 11626.2147322334. The cubic root of 135168869 is about 513.2065926026.

The spelling of 135168869 in words is "one hundred thirty-five million, one hundred sixty-eight thousand, eight hundred sixty-nine".