169138259 has 8 divisors (see below), whose sum is σ = 172396800. Its totient is φ = 165904200.

The previous prime is 169138241. The next prime is 169138261. The reversal of 169138259 is 952831961.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 169138259 - 2¹⁶ = 169072723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169132259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8144 + ... + 20114.

It is an arithmetic number, because the mean of its divisors is an integer number (21549600).

Almost surely, 2^169138259 is an apocalyptic number.

169138259 is a deficient number, since it is larger than the sum of its proper divisors (3258541).

169138259 is a wasteful number, since it uses less digits than its factorization.

169138259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12241.

The product of its digits is 116640, while the sum is 44.

The square root of 169138259 is about 13005.3165666969. The cubic root of 169138259 is about 553.0282100698.

The spelling of 169138259 in words is "one hundred sixty-nine million, one hundred thirty-eight thousand, two hundred fifty-nine".