163814401 has 3 divisors (see below), whose sum is σ = 163827201. Its totient is φ = 163801602.

The previous prime is 163814389. The next prime is 163814407. The reversal of 163814401 is 104418361.

The square root of 163814401 is 12799.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 104418361 = 67 ⋅1558483.

It is not a de Polignac number, because 163814401 - 2⁵ = 163814369 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163814401.

It is not an unprimeable number, because it can be changed into a prime (163814407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6400 + ... + 19198.

It is an arithmetic number, because the mean of its divisors is an integer number (54609067).

Almost surely, 2^163814401 is an apocalyptic number.

163814401 is the 12799-th square number.

163814401 is the 6400-th centered octagonal number.

It is an amenable number.

163814401 is a deficient number, since it is larger than the sum of its proper divisors (12800).

163814401 is an frugal number, since it uses more digits than its factorization.

163814401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25598 (or 12799 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The cubic root of 163814401 is about 547.1638029663.

Multiplying 163814401 by its product of nonzero digits (2304), we get a square (377428379904 = 614352²).

The spelling of 163814401 in words is "one hundred sixty-three million, eight hundred fourteen thousand, four hundred one".