1916233774 has 32 divisors (see below), whose sum is σ = 3633287616. Its totient is φ = 737579520.

The previous prime is 1916233763. The next prime is 1916233777. The reversal of 1916233774 is 4773326191.

It is a self number, because there is not a number n which added to its sum of digits gives 1916233774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916233777) 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, 135547 + ... + 149014.

It is an arithmetic number, because the mean of its divisors is an integer number (113540238).

Almost surely, 2^1916233774 is an apocalyptic number.

1916233774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1916233774 is a deficient number, since it is larger than the sum of its proper divisors (1717053842).

1916233774 is a wasteful number, since it uses less digits than its factorization.

1916233774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284620.

The product of its digits is 190512, while the sum is 43.

The square root of 1916233774 is about 43774.8075267042. The cubic root of 1916233774 is about 1242.0797940476.

The spelling of 1916233774 in words is "one billion, nine hundred sixteen million, two hundred thirty-three thousand, seven hundred seventy-four".