19952163 has 60 divisors (see below), whose sum is σ = 37905912. Its totient is φ = 10342080.

The previous prime is 19952159. The next prime is 19952171. The reversal of 19952163 is 36125991.

It is not a de Polignac number, because 19952163 - 2² = 19952159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19952113) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 43431 + ... + 43887.

Almost surely, 2^19952163 is an apocalyptic number.

19952163 is a deficient number, since it is larger than the sum of its proper divisors (17953749).

19952163 is a wasteful number, since it uses less digits than its factorization.

19952163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 478 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 19952163 is about 4466.7844138709. The cubic root of 19952163 is about 271.2251728924.

Subtracting 19952163 from its reverse (36125991), we obtain a triangular number (16173828 = T₅₆₈₇).

The spelling of 19952163 in words is "nineteen million, nine hundred fifty-two thousand, one hundred sixty-three".