164385603 has 12 divisors (see below), whose sum is σ = 242968440. Its totient is φ = 107041536.

The previous prime is 164385553. The next prime is 164385607. The reversal of 164385603 is 306583461.

164385603 is a `hidden beast` number, since 1 + 6 + 43 + 8 + 5 + 603 = 666.

It is not a de Polignac number, because 164385603 - 2¹⁰ = 164384579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164385607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211998 + ... + 212771.

It is an arithmetic number, because the mean of its divisors is an integer number (20247370).

Almost surely, 2^164385603 is an apocalyptic number.

164385603 is a deficient number, since it is larger than the sum of its proper divisors (78582837).

164385603 is a wasteful number, since it uses less digits than its factorization.

164385603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424818 (or 424815 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 164385603 is about 12821.2949034019. The cubic root of 164385603 is about 547.7990309923.

The spelling of 164385603 in words is "one hundred sixty-four million, three hundred eighty-five thousand, six hundred three".