163628273 has 2 divisors, whose sum is σ = 163628274. Its totient is φ = 163628272.

The previous prime is 163628263. The next prime is 163628303. The reversal of 163628273 is 372826361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135675904 + 27952369 = 11648^2 + 5287^2 .

It is an emirp because it is prime and its reverse (372826361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163628273 - 2¹⁸ = 163366129 is a prime.

It is not a weakly prime, because it can be changed into another prime (163628203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81814136 + 81814137.

It is an arithmetic number, because the mean of its divisors is an integer number (81814137).

Almost surely, 2^163628273 is an apocalyptic number.

It is an amenable number.

163628273 is a deficient number, since it is larger than the sum of its proper divisors (1).

163628273 is an equidigital number, since it uses as much as digits as its factorization.

163628273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 163628273 is about 12791.7267403584. The cubic root of 163628273 is about 546.9564929463.

The spelling of 163628273 in words is "one hundred sixty-three million, six hundred twenty-eight thousand, two hundred seventy-three".