19940163 has 8 divisors (see below), whose sum is σ = 26686800. Its totient is φ = 13243488.

The previous prime is 19940159. The next prime is 19940191. The reversal of 19940163 is 36104991.

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

It is not a de Polignac number, because 19940163 - 2² = 19940159 is a prime.

It is a super-2 number, since 2×19940163² = 795220200933138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19940113) 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, 11548 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (3335850).

Almost surely, 2^19940163 is an apocalyptic number.

19940163 is a deficient number, since it is larger than the sum of its proper divisors (6746637).

19940163 is a wasteful number, since it uses less digits than its factorization.

19940163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24981.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 19940163 is about 4465.4409636675. The cubic root of 19940163 is about 271.1707868961.

The spelling of 19940163 in words is "nineteen million, nine hundred forty thousand, one hundred sixty-three".