164312563 has 2 divisors, whose sum is σ = 164312564. Its totient is φ = 164312562.

The previous prime is 164312539. The next prime is 164312567. The reversal of 164312563 is 365213461.

It is a strong prime.

It is an emirp because it is prime and its reverse (365213461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164312563 is a prime.

It is not a weakly prime, because it can be changed into another prime (164312567) 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 as a sum of consecutive naturals, namely, 82156281 + 82156282.

It is an arithmetic number, because the mean of its divisors is an integer number (82156282).

Almost surely, 2^164312563 is an apocalyptic number.

164312563 is a deficient number, since it is larger than the sum of its proper divisors (1).

164312563 is an equidigital number, since it uses as much as digits as its factorization.

164312563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 164312563 is about 12818.4462006906. The cubic root of 164312563 is about 547.7178860747.

The spelling of 164312563 in words is "one hundred sixty-four million, three hundred twelve thousand, five hundred sixty-three".