169385136 has 20 divisors (see below), whose sum is σ = 437578392. Its totient is φ = 56461696.

The previous prime is 169385129. The next prime is 169385159. The reversal of 169385136 is 631583961.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1764381 + ... + 1764476.

Almost surely, 2^169385136 is an apocalyptic number.

169385136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

169385136 is an abundant number, since it is smaller than the sum of its proper divisors (268193256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169385136 is a wasteful number, since it uses less digits than its factorization.

169385136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528868 (or 3528862 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 169385136 is about 13014.8044933453. The cubic root of 169385136 is about 553.2971489701.

The spelling of 169385136 in words is "one hundred sixty-nine million, three hundred eighty-five thousand, one hundred thirty-six".