173163973 has 2 divisors, whose sum is σ = 173163974. Its totient is φ = 173163972.

The previous prime is 173163961. The next prime is 173164001. The reversal of 173163973 is 379361371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97160449 + 76003524 = 9857^2 + 8718^2 .

It is an emirp because it is prime and its reverse (379361371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173163973 - 2⁹ = 173163461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173163073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86581986 + 86581987.

It is an arithmetic number, because the mean of its divisors is an integer number (86581987).

Almost surely, 2^173163973 is an apocalyptic number.

It is an amenable number.

173163973 is a deficient number, since it is larger than the sum of its proper divisors (1).

173163973 is an equidigital number, since it uses as much as digits as its factorization.

173163973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 40.

The square root of 173163973 is about 13159.1782798167. The cubic root of 173163973 is about 557.3814536093.

The spelling of 173163973 in words is "one hundred seventy-three million, one hundred sixty-three thousand, nine hundred seventy-three".