163418623 has 2 divisors, whose sum is σ = 163418624. Its totient is φ = 163418622.

The previous prime is 163418551. The next prime is 163418627. The reversal of 163418623 is 326814361.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (326814361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163418623 - 2⁹ = 163418111 is a prime.

It is a super-2 number, since 2×163418623² = 53411292686432258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163418627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81709311 + 81709312.

It is an arithmetic number, because the mean of its divisors is an integer number (81709312).

Almost surely, 2^163418623 is an apocalyptic number.

163418623 is a deficient number, since it is larger than the sum of its proper divisors (1).

163418623 is an equidigital number, since it uses as much as digits as its factorization.

163418623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 163418623 is about 12783.5293639902. The cubic root of 163418623 is about 546.7227956860.

It can be divided in two parts, 16341 and 8623, that added together give a square (24964 = 158²).

The spelling of 163418623 in words is "one hundred sixty-three million, four hundred eighteen thousand, six hundred twenty-three".