163432401 has 12 divisors (see below), whose sum is σ = 239521296. Its totient is φ = 99049720.

The previous prime is 163432387. The next prime is 163432417. The reversal of 163432401 is 104234361.

It is not a de Polignac number, because 163432401 - 2¹⁵ = 163399633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163432421) 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 11 ways as a sum of consecutive naturals, for example, 224751 + ... + 225476.

It is an arithmetic number, because the mean of its divisors is an integer number (19960108).

Almost surely, 2^163432401 is an apocalyptic number.

163432401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163432401 is a deficient number, since it is larger than the sum of its proper divisors (76088895).

163432401 is a wasteful number, since it uses less digits than its factorization.

163432401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450252 (or 450241 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 163432401 is about 12784.0682491920. The cubic root of 163432401 is about 546.7381601833.

Adding to 163432401 its reverse (104234361), we get a palindrome (267666762).

The spelling of 163432401 in words is "one hundred sixty-three million, four hundred thirty-two thousand, four hundred one".