19664134 has 8 divisors (see below), whose sum is σ = 33709968. Its totient is φ = 8427480.

The previous prime is 19664123. The next prime is 19664159. The reversal of 19664134 is 43146691.

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

It is a self number, because there is not a number n which added to its sum of digits gives 19664134.

It is a congruent number.

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, 702277 + ... + 702304.

It is an arithmetic number, because the mean of its divisors is an integer number (4213746).

Almost surely, 2^19664134 is an apocalyptic number.

19664134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19664134 is a deficient number, since it is larger than the sum of its proper divisors (14045834).

19664134 is a wasteful number, since it uses less digits than its factorization.

19664134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404590.

The product of its digits is 15552, while the sum is 34.

The square root of 19664134 is about 4434.4260056968. The cubic root of 19664134 is about 269.9137081351.

The spelling of 19664134 in words is "nineteen million, six hundred sixty-four thousand, one hundred thirty-four".