163345403 has 8 divisors (see below), whose sum is σ = 176039808. Its totient is φ = 150669504.

The previous prime is 163345393. The next prime is 163345409. The reversal of 163345403 is 304543361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163345403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163345409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17750 + ... + 25332.

It is an arithmetic number, because the mean of its divisors is an integer number (22004976).

Almost surely, 2^163345403 is an apocalyptic number.

163345403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163345403 is a deficient number, since it is larger than the sum of its proper divisors (12694405).

163345403 is a wasteful number, since it uses less digits than its factorization.

163345403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9253.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 163345403 is about 12780.6652017804. The cubic root of 163345403 is about 546.6411301195.

Adding to 163345403 its reverse (304543361), we get a palindrome (467888764).

The spelling of 163345403 in words is "one hundred sixty-three million, three hundred forty-five thousand, four hundred three".