163930403 has 8 divisors (see below), whose sum is σ = 201760608. Its totient is φ = 129703104.

The previous prime is 163930397. The next prime is 163930427. The reversal of 163930403 is 304039361.

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 163930403 - 2¹² = 163926307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163930463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900626 + ... + 900807.

It is an arithmetic number, because the mean of its divisors is an integer number (25220076).

Almost surely, 2^163930403 is an apocalyptic number.

163930403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163930403 is a deficient number, since it is larger than the sum of its proper divisors (37830205).

163930403 is a wasteful number, since it uses less digits than its factorization.

163930403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801453.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 163930403 is about 12803.5308801908. The cubic root of 163930403 is about 547.2929269807.

Adding to 163930403 its reverse (304039361), we get a palindrome (467969764).

The spelling of 163930403 in words is "one hundred sixty-three million, nine hundred thirty thousand, four hundred three".