164618194 has 8 divisors (see below), whose sum is σ = 265921740. Its totient is φ = 75977616.

The previous prime is 164618189. The next prime is 164618197. The reversal of 164618194 is 491816461.

It can be written as a sum of positive squares in 2 ways, for example, as 162231169 + 2387025 = 12737^2 + 1545^2 .

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

It is a super-3 number, since 3×164618194³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (164618197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3165709 + ... + 3165760.

Almost surely, 2^164618194 is an apocalyptic number.

164618194 is a deficient number, since it is larger than the sum of its proper divisors (101303546).

164618194 is a wasteful number, since it uses less digits than its factorization.

164618194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331484.

The product of its digits is 41472, while the sum is 40.

The square root of 164618194 is about 12830.3621928611. The cubic root of 164618194 is about 548.0572715287.

The spelling of 164618194 in words is "one hundred sixty-four million, six hundred eighteen thousand, one hundred ninety-four".