164032403 has 4 divisors (see below), whose sum is σ = 167127408. Its totient is φ = 160937400.

The previous prime is 164032373. The next prime is 164032411. The reversal of 164032403 is 304230461.

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 164032403 - 2¹⁸ = 163770259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164032483) 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, 1547423 + ... + 1547528.

It is an arithmetic number, because the mean of its divisors is an integer number (41781852).

Almost surely, 2^164032403 is an apocalyptic number.

164032403 is a deficient number, since it is larger than the sum of its proper divisors (3095005).

164032403 is an equidigital number, since it uses as much as digits as its factorization.

164032403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095004.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 164032403 is about 12807.5135369829. The cubic root of 164032403 is about 547.4064147848.

Adding to 164032403 its reverse (304230461), we get a palindrome (468262864).

It can be divided in two parts, 1640 and 32403, that added together give a palindrome (34043).

The spelling of 164032403 in words is "one hundred sixty-four million, thirty-two thousand, four hundred three".