164199983 has 4 divisors (see below), whose sum is σ = 166891848. Its totient is φ = 161508120.

The previous prime is 164199947. The next prime is 164200007. The reversal of 164199983 is 389991461.

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

It is a cyclic number.

It is not a de Polignac number, because 164199983 - 2¹⁴ = 164183599 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 (164129983) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1345841 + ... + 1345962.

It is an arithmetic number, because the mean of its divisors is an integer number (41722962).

Almost surely, 2^164199983 is an apocalyptic number.

164199983 is a deficient number, since it is larger than the sum of its proper divisors (2691865).

164199983 is an equidigital number, since it uses as much as digits as its factorization.

164199983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691864.

The product of its digits is 419904, while the sum is 50.

The square root of 164199983 is about 12814.0541203789. The cubic root of 164199983 is about 547.5927664722.

The spelling of 164199983 in words is "one hundred sixty-four million, one hundred ninety-nine thousand, nine hundred eighty-three".