164244403 has 16 divisors (see below), whose sum is σ = 177313536. Its totient is φ = 151763040.

The previous prime is 164244389. The next prime is 164244407. The reversal of 164244403 is 304442461.

It is not a de Polignac number, because 164244403 - 2¹³ = 164236211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164244407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80668 + ... + 82678.

It is an arithmetic number, because the mean of its divisors is an integer number (11082096).

Almost surely, 2^164244403 is an apocalyptic number.

164244403 is a deficient number, since it is larger than the sum of its proper divisors (13069133).

164244403 is a wasteful number, since it uses less digits than its factorization.

164244403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 164244403 is about 12815.7872563491. The cubic root of 164244403 is about 547.6421409751.

Adding to 164244403 its reverse (304442461), we get a palindrome (468686864).

The spelling of 164244403 in words is "one hundred sixty-four million, two hundred forty-four thousand, four hundred three".