164188963 has 2 divisors, whose sum is σ = 164188964. Its totient is φ = 164188962.

The previous prime is 164188961. The next prime is 164189021. The reversal of 164188963 is 369881461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164188963 - 2¹ = 164188961 is a prime.

Together with 164188961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (164188961) 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 as a sum of consecutive naturals, namely, 82094481 + 82094482.

It is an arithmetic number, because the mean of its divisors is an integer number (82094482).

Almost surely, 2^164188963 is an apocalyptic number.

164188963 is a deficient number, since it is larger than the sum of its proper divisors (1).

164188963 is an equidigital number, since it uses as much as digits as its factorization.

164188963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 164188963 is about 12813.6241165410. The cubic root of 164188963 is about 547.5805159486.

The spelling of 164188963 in words is "one hundred sixty-four million, one hundred eighty-eight thousand, nine hundred sixty-three".