169364197 has 4 divisors (see below), whose sum is σ = 169526700. Its totient is φ = 169201696.

The previous prime is 169364177. The next prime is 169364213. The reversal of 169364197 is 791463961.

It is a happy number.

It is a Cunningham number, because it is equal to 13014²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791463961 = 503 ⋅1573487.

It can be written as a sum of positive squares in 2 ways, for example, as 153611236 + 15752961 = 12394^2 + 3969^2 .

It is a cyclic number.

It is not a de Polignac number, because 169364197 - 2²⁷ = 35146469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169364177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79678 + ... + 81775.

It is an arithmetic number, because the mean of its divisors is an integer number (42381675).

Almost surely, 2^169364197 is an apocalyptic number.

It is an amenable number.

169364197 is a deficient number, since it is larger than the sum of its proper divisors (162503).

169364197 is a wasteful number, since it uses less digits than its factorization.

169364197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162502.

The product of its digits is 244944, while the sum is 46.

The square root of 169364197 is about 13014.0000384202. Note that the first 4 decimals coincide. The cubic root of 169364197 is about 553.2743489246.

The spelling of 169364197 in words is "one hundred sixty-nine million, three hundred sixty-four thousand, one hundred ninety-seven".