164320863 has 48 divisors (see below), whose sum is σ = 266333184. Its totient is φ = 89752320.

The previous prime is 164320853. The next prime is 164320889. The reversal of 164320863 is 368023461.

It is not a de Polignac number, because 164320863 - 2⁶ = 164320799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164320823) 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 47 ways as a sum of consecutive naturals, for example, 487431 + ... + 487767.

It is an arithmetic number, because the mean of its divisors is an integer number (5548608).

Almost surely, 2^164320863 is an apocalyptic number.

164320863 is a deficient number, since it is larger than the sum of its proper divisors (102012321).

164320863 is a wasteful number, since it uses less digits than its factorization.

164320863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 164320863 is about 12818.7699487899. The cubic root of 164320863 is about 547.7271082990.

The spelling of 164320863 in words is "one hundred sixty-four million, three hundred twenty thousand, eight hundred sixty-three".