1916081328 has 40 divisors (see below), whose sum is σ = 5657003008. Its totient is φ = 547451712.

The previous prime is 1916081273. The next prime is 1916081329. The reversal of 1916081328 is 8231806191.

It is not an unprimeable number, because it can be changed into a prime (1916081329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2850976 + ... + 2851647.

Almost surely, 2^1916081328 is an apocalyptic number.

It is an amenable number.

1916081328 is an abundant number, since it is smaller than the sum of its proper divisors (3740921680).

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

1916081328 is a wasteful number, since it uses less digits than its factorization.

1916081328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702641 (or 5702635 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1916081328 is about 43773.0662394126. The cubic root of 1916081328 is about 1242.0468552833.

The spelling of 1916081328 in words is "one billion, nine hundred sixteen million, eighty-one thousand, three hundred twenty-eight".