163715873 has 2 divisors, whose sum is σ = 163715874. Its totient is φ = 163715872.

The previous prime is 163715833. The next prime is 163715897. The reversal of 163715873 is 378517361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151486864 + 12229009 = 12308^2 + 3497^2 .

It is a cyclic number.

It is not a de Polignac number, because 163715873 - 2¹² = 163711777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163715873.

It is not a weakly prime, because it can be changed into another prime (163715803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81857936 + 81857937.

It is an arithmetic number, because the mean of its divisors is an integer number (81857937).

Almost surely, 2^163715873 is an apocalyptic number.

It is an amenable number.

163715873 is a deficient number, since it is larger than the sum of its proper divisors (1).

163715873 is an equidigital number, since it uses as much as digits as its factorization.

163715873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 163715873 is about 12795.1503703552. The cubic root of 163715873 is about 547.0540817068.

The spelling of 163715873 in words is "one hundred sixty-three million, seven hundred fifteen thousand, eight hundred seventy-three".