164099506 has 4 divisors (see below), whose sum is σ = 246149262. Its totient is φ = 82049752.

The previous prime is 164099491. The next prime is 164099519. The reversal of 164099506 is 605990461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 152300281 + 11799225 = 12341^2 + 3435^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41024875 + ... + 41024878.

Almost surely, 2^164099506 is an apocalyptic number.

164099506 is a deficient number, since it is larger than the sum of its proper divisors (82049756).

164099506 is an equidigital number, since it uses as much as digits as its factorization.

164099506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82049755.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 164099506 is about 12810.1329423234. The cubic root of 164099506 is about 547.4810496419.

The spelling of 164099506 in words is "one hundred sixty-four million, ninety-nine thousand, five hundred six".