19964119 has 12 divisors (see below), whose sum is σ = 23362248. Its totient is φ = 17010000.

The previous prime is 19964111. The next prime is 19964123. The reversal of 19964119 is 91146991.

It is not a de Polignac number, because 19964119 - 2³ = 19964111 is a prime.

It is a super-2 number, since 2×19964119² = 797132094892322, which contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7744 + ... + 9994.

It is an arithmetic number, because the mean of its divisors is an integer number (1946854).

Almost surely, 2^19964119 is an apocalyptic number.

19964119 is a deficient number, since it is larger than the sum of its proper divisors (3398129).

19964119 is a wasteful number, since it uses less digits than its factorization.

19964119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2439 counting only the distinct ones).

The product of its digits is 17496, while the sum is 40.

The square root of 19964119 is about 4468.1225363680. The cubic root of 19964119 is about 271.2793377910.

The spelling of 19964119 in words is "nineteen million, nine hundred sixty-four thousand, one hundred nineteen".