169138698 has 16 divisors (see below), whose sum is σ = 338972256. Its totient is φ = 56263760.

The previous prime is 169138687. The next prime is 169138699. The reversal of 169138698 is 896831961.

It is a super-2 number, since 2×169138698² = 57215798322270408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 169138698.

It is not an unprimeable number, because it can be changed into a prime (169138699) 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 7 ways as a sum of consecutive naturals, for example, 25761 + ... + 31652.

It is an arithmetic number, because the mean of its divisors is an integer number (21185766).

Almost surely, 2^169138698 is an apocalyptic number.

169138698 is an abundant number, since it is smaller than the sum of its proper divisors (169833558).

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

169138698 is a wasteful number, since it uses less digits than its factorization.

169138698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57909.

The product of its digits is 559872, while the sum is 51.

The square root of 169138698 is about 13005.3334443989. Note that the first 3 decimals coincide. The cubic root of 169138698 is about 553.0286885328.

The spelling of 169138698 in words is "one hundred sixty-nine million, one hundred thirty-eight thousand, six hundred ninety-eight".