1916728224 has 24 divisors (see below), whose sum is σ = 5031411840. Its totient is φ = 638909376.

The previous prime is 1916728211. The next prime is 1916728237. The reversal of 1916728224 is 4228276191.

It is an interprime number because it is at equal distance from previous prime (1916728211) and next prime (1916728237).

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9982864 + ... + 9983055.

It is an arithmetic number, because the mean of its divisors is an integer number (209642160).

Almost surely, 2^1916728224 is an apocalyptic number.

It is an amenable number.

1916728224 is an abundant number, since it is smaller than the sum of its proper divisors (3114683616).

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

1916728224 is a wasteful number, since it uses less digits than its factorization.

1916728224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19965932 (or 19965924 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 1916728224 is about 43780.4548171898. The cubic root of 1916728224 is about 1242.1866170506.

The spelling of 1916728224 in words is "one billion, nine hundred sixteen million, seven hundred twenty-eight thousand, two hundred twenty-four".