169938197 has 16 divisors (see below), whose sum is σ = 202638912. Its totient is φ = 140469120.

The previous prime is 169938169. The next prime is 169938199. The reversal of 169938197 is 791839961.

It is not a de Polignac number, because 169938197 - 2⁶ = 169938133 is a prime.

It is a super-2 number, since 2×169938197² = 57757981599221618, 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 (169938199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713 + ... + 18449.

It is an arithmetic number, because the mean of its divisors is an integer number (12664932).

Almost surely, 2^169938197 is an apocalyptic number.

It is an amenable number.

169938197 is a deficient number, since it is larger than the sum of its proper divisors (32700715).

169938197 is a wasteful number, since it uses less digits than its factorization.

169938197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17828.

The product of its digits is 734832, while the sum is 53.

The square root of 169938197 is about 13036.0345581009. The cubic root of 169938197 is about 553.8986866565.

The spelling of 169938197 in words is "one hundred sixty-nine million, nine hundred thirty-eight thousand, one hundred ninety-seven".