169139135 has 32 divisors (see below), whose sum is σ = 230169600. Its totient is φ = 118245760.

The previous prime is 169139129. The next prime is 169139141. The reversal of 169139135 is 531931961.

It is an interprime number because it is at equal distance from previous prime (169139129) and next prime (169139141).

It is not a de Polignac number, because 169139135 - 2⁴ = 169139119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151961 + ... + 153069.

It is an arithmetic number, because the mean of its divisors is an integer number (7192800).

Almost surely, 2^169139135 is an apocalyptic number.

169139135 is a deficient number, since it is larger than the sum of its proper divisors (61030465).

169139135 is a wasteful number, since it uses less digits than its factorization.

169139135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231.

The product of its digits is 21870, while the sum is 38.

The square root of 169139135 is about 13005.3502451876. The cubic root of 169139135 is about 553.0291648151.

The spelling of 169139135 in words is "one hundred sixty-nine million, one hundred thirty-nine thousand, one hundred thirty-five".