19964118 has 8 divisors (see below), whose sum is σ = 39928248. Its totient is φ = 6654704.

The previous prime is 19964111. The next prime is 19964123. The reversal of 19964118 is 81146991.

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

19964118 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19964111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1663671 + ... + 1663682.

It is an arithmetic number, because the mean of its divisors is an integer number (4991031).

Almost surely, 2^19964118 is an apocalyptic number.

19964118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19964118 is a wasteful number, since it uses less digits than its factorization.

19964118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327358.

The product of its digits is 15552, while the sum is 39.

The square root of 19964118 is about 4468.1224244642. The cubic root of 19964118 is about 271.2793332616.

The spelling of 19964118 in words is "nineteen million, nine hundred sixty-four thousand, one hundred eighteen".