163003361 has 8 divisors (see below), whose sum is σ = 173489544. Its totient is φ = 152616960.

The previous prime is 163003343. The next prime is 163003367. The reversal of 163003361 is 163300361.

It can be written as a sum of positive squares in 4 ways, for example, as 44302336 + 118701025 = 6656^2 + 10895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163003361 - 2⁶ = 163003297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163003367) 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 in 7 ways as a sum of consecutive naturals, for example, 21560 + ... + 28121.

It is an arithmetic number, because the mean of its divisors is an integer number (21686193).

Almost surely, 2^163003361 is an apocalyptic number.

It is an amenable number.

163003361 is a deficient number, since it is larger than the sum of its proper divisors (10486183).

163003361 is a wasteful number, since it uses less digits than its factorization.

163003361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49891.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 163003361 is about 12767.2769610438. The cubic root of 163003361 is about 546.2593116318.

The spelling of 163003361 in words is "one hundred sixty-three million, three thousand, three hundred sixty-one".