163378201 has 12 divisors (see below), whose sum is σ = 190754148. Its totient is φ = 139521312.

The previous prime is 163378151. The next prime is 163378219. The reversal of 163378201 is 102873361.

It can be written as a sum of positive squares in 2 ways, for example, as 10732176 + 152646025 = 3276^2 + 12355^2 .

It is not a de Polignac number, because 163378201 - 2⁹ = 163377689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163348201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7555 + ... + 19591.

It is an arithmetic number, because the mean of its divisors is an integer number (15896179).

Almost surely, 2^163378201 is an apocalyptic number.

It is an amenable number.

163378201 is a deficient number, since it is larger than the sum of its proper divisors (27375947).

163378201 is a wasteful number, since it uses less digits than its factorization.

163378201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12328 (or 12321 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 163378201 is about 12781.9482474308. The cubic root of 163378201 is about 546.6777142242.

The spelling of 163378201 in words is "one hundred sixty-three million, three hundred seventy-eight thousand, two hundred one".