164499443 has 4 divisors (see below), whose sum is σ = 166481448. Its totient is φ = 162517440.

The previous prime is 164499383. The next prime is 164499449. The reversal of 164499443 is 344994461.

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 164499443 - 2²² = 160305139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164499394 and 164499403.

It is not an unprimeable number, because it can be changed into a prime (164499449) 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, 990878 + ... + 991043.

It is an arithmetic number, because the mean of its divisors is an integer number (41620362).

Almost surely, 2^164499443 is an apocalyptic number.

164499443 is a deficient number, since it is larger than the sum of its proper divisors (1982005).

164499443 is an equidigital number, since it uses as much as digits as its factorization.

164499443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982004.

The product of its digits is 373248, while the sum is 44.

The square root of 164499443 is about 12825.7336242415. The cubic root of 164499443 is about 547.9254553884.

The spelling of 164499443 in words is "one hundred sixty-four million, four hundred ninety-nine thousand, four hundred forty-three".