164739503 has 16 divisors (see below), whose sum is σ = 180258624. Its totient is φ = 149921280.

The previous prime is 164739473. The next prime is 164739521. The reversal of 164739503 is 305937461.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164739503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164739803) 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 15 ways as a sum of consecutive naturals, for example, 113126 + ... + 114572.

It is an arithmetic number, because the mean of its divisors is an integer number (11266164).

Almost surely, 2^164739503 is an apocalyptic number.

164739503 is a deficient number, since it is larger than the sum of its proper divisors (15519121).

164739503 is a wasteful number, since it uses less digits than its factorization.

164739503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 164739503 is about 12835.0887414151. The cubic root of 164739503 is about 548.1918616644.

The spelling of 164739503 in words is "one hundred sixty-four million, seven hundred thirty-nine thousand, five hundred three".