163837897 has 2 divisors, whose sum is σ = 163837898. Its totient is φ = 163837896.

The previous prime is 163837859. The next prime is 163837937. The reversal of 163837897 is 798738361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109432521 + 54405376 = 10461^2 + 7376^2 .

It is an emirp because it is prime and its reverse (798738361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163837897 - 2¹¹ = 163835849 is a prime.

It is not a weakly prime, because it can be changed into another prime (163837837) 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, 81918948 + 81918949.

It is an arithmetic number, because the mean of its divisors is an integer number (81918949).

Almost surely, 2^163837897 is an apocalyptic number.

It is an amenable number.

163837897 is a deficient number, since it is larger than the sum of its proper divisors (1).

163837897 is an equidigital number, since it uses as much as digits as its factorization.

163837897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 163837897 is about 12799.9178512989. The cubic root of 163837897 is about 547.1899617290.

The spelling of 163837897 in words is "one hundred sixty-three million, eight hundred thirty-seven thousand, eight hundred ninety-seven".