164493983 has 4 divisors (see below), whose sum is σ = 166342320. Its totient is φ = 162645648.

The previous prime is 164493929. The next prime is 164493991. The reversal of 164493983 is 389394461.

It is a happy number.

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 164493983 - 2⁶ = 164493919 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 (164493913) 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, 924035 + ... + 924212.

It is an arithmetic number, because the mean of its divisors is an integer number (41585580).

Almost surely, 2^164493983 is an apocalyptic number.

164493983 is a deficient number, since it is larger than the sum of its proper divisors (1848337).

164493983 is an equidigital number, since it uses as much as digits as its factorization.

164493983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848336.

The product of its digits is 559872, while the sum is 47.

The square root of 164493983 is about 12825.5207691540. The cubic root of 164493983 is about 547.9193931468.

The spelling of 164493983 in words is "one hundred sixty-four million, four hundred ninety-three thousand, nine hundred eighty-three".