1916775564 has 96 divisors (see below), whose sum is σ = 5104028160. Its totient is φ = 554188800.

The previous prime is 1916775563. The next prime is 1916775577. The reversal of 1916775564 is 4655776191.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1916775563) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2334274 + ... + 2335094.

It is an arithmetic number, because the mean of its divisors is an integer number (53166960).

Almost surely, 2^1916775564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916775564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2552014080).

1916775564 is an abundant number, since it is smaller than the sum of its proper divisors (3187252596).

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

1916775564 is a wasteful number, since it uses less digits than its factorization.

1916775564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631 (or 1629 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 51.

The square root of 1916775564 is about 43780.9954660695. The cubic root of 1916775564 is about 1242.1968436144.

The spelling of 1916775564 in words is "one billion, nine hundred sixteen million, seven hundred seventy-five thousand, five hundred sixty-four".