16648919 has 8 divisors (see below), whose sum is σ = 19058688. Its totient is φ = 14247000.

The previous prime is 16648909. The next prime is 16648949. The reversal of 16648919 is 91984661.

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

It is a cyclic number.

It is not a de Polignac number, because 16648919 - 2⁸ = 16648663 is a prime.

It is a super-2 number, since 2×16648919² = 554373007737122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16648919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16648909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3674 + ... + 6840.

It is an arithmetic number, because the mean of its divisors is an integer number (2382336).

Almost surely, 2^16648919 is an apocalyptic number.

16648919 is a deficient number, since it is larger than the sum of its proper divisors (2409769).

16648919 is an equidigital number, since it uses as much as digits as its factorization.

16648919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925.

The product of its digits is 93312, while the sum is 44.

The square root of 16648919 is about 4080.3086893028. The cubic root of 16648919 is about 255.3457772334.

The spelling of 16648919 in words is "sixteen million, six hundred forty-eight thousand, nine hundred nineteen".