1916895774 has 32 divisors (see below), whose sum is σ = 3868922880. Its totient is φ = 633132000.

The previous prime is 1916895767. The next prime is 1916895779. The reversal of 1916895774 is 4775986191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916895779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388032 + ... + 392940.

It is an arithmetic number, because the mean of its divisors is an integer number (120903840).

Almost surely, 2^1916895774 is an apocalyptic number.

1916895774 is an abundant number, since it is smaller than the sum of its proper divisors (1952027106).

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

1916895774 is a wasteful number, since it uses less digits than its factorization.

1916895774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496.

The product of its digits is 3810240, while the sum is 57.

The square root of 1916895774 is about 43782.3683004928. The cubic root of 1916895774 is about 1242.2228110714. Note that the first 3 decimals are identical.

The spelling of 1916895774 in words is "one billion, nine hundred sixteen million, eight hundred ninety-five thousand, seven hundred seventy-four".