163768061 has 2 divisors, whose sum is σ = 163768062. Its totient is φ = 163768060.

The previous prime is 163768013. The next prime is 163768079. The reversal of 163768061 is 160867361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161442436 + 2325625 = 12706^2 + 1525^2 .

It is an emirp because it is prime and its reverse (160867361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163768061 - 2⁶ = 163767997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163768001) 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, 81884030 + 81884031.

It is an arithmetic number, because the mean of its divisors is an integer number (81884031).

Almost surely, 2^163768061 is an apocalyptic number.

It is an amenable number.

163768061 is a deficient number, since it is larger than the sum of its proper divisors (1).

163768061 is an equidigital number, since it uses as much as digits as its factorization.

163768061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 163768061 is about 12797.1895742776. The cubic root of 163768061 is about 547.1122039988.

The spelling of 163768061 in words is "one hundred sixty-three million, seven hundred sixty-eight thousand, sixty-one".