164543197 has 8 divisors (see below), whose sum is σ = 202514816. Its totient is φ = 130187952.

The previous prime is 164543179. The next prime is 164543207. The reversal of 164543197 is 791345461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164543197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164543117) 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, 903993 + ... + 904174.

It is an arithmetic number, because the mean of its divisors is an integer number (25314352).

Almost surely, 2^164543197 is an apocalyptic number.

It is an amenable number.

164543197 is a deficient number, since it is larger than the sum of its proper divisors (37971619).

164543197 is a wasteful number, since it uses less digits than its factorization.

164543197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808187.

The product of its digits is 90720, while the sum is 40.

The square root of 164543197 is about 12827.4392222298. The cubic root of 164543197 is about 547.9740306393.

The spelling of 164543197 in words is "one hundred sixty-four million, five hundred forty-three thousand, one hundred ninety-seven".