19953168 has 20 divisors (see below), whose sum is σ = 51545808. Its totient is φ = 6651040.

The previous prime is 19953149. The next prime is 19953179. The reversal of 19953168 is 86135991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207798 + ... + 207893.

Almost surely, 2^19953168 is an apocalyptic number.

It is an amenable number.

19953168 is an abundant number, since it is smaller than the sum of its proper divisors (31592640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19953168 is a wasteful number, since it uses less digits than its factorization.

19953168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415702 (or 415696 counting only the distinct ones).

The product of its digits is 58320, while the sum is 42.

The square root of 19953168 is about 4466.8969094887. The cubic root of 19953168 is about 271.2297267299.

The spelling of 19953168 in words is "nineteen million, nine hundred fifty-three thousand, one hundred sixty-eight".