163974773 has 2 divisors, whose sum is σ = 163974774. Its totient is φ = 163974772.

The previous prime is 163974761. The next prime is 163974803. The reversal of 163974773 is 377479361.

163974773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96373489 + 67601284 = 9817^2 + 8222^2 .

It is a cyclic number.

It is not a de Polignac number, because 163974773 - 2²² = 159780469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163974743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81987386 + 81987387.

It is an arithmetic number, because the mean of its divisors is an integer number (81987387).

Almost surely, 2^163974773 is an apocalyptic number.

It is an amenable number.

163974773 is a deficient number, since it is larger than the sum of its proper divisors (1).

163974773 is an equidigital number, since it uses as much as digits as its factorization.

163974773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 47.

The square root of 163974773 is about 12805.2634881130. The cubic root of 163974773 is about 547.3422999588.

The spelling of 163974773 in words is "one hundred sixty-three million, nine hundred seventy-four thousand, seven hundred seventy-three".