1923819868 has 12 divisors (see below), whose sum is σ = 3368581272. Its totient is φ = 961368080.

The previous prime is 1923819853. The next prime is 1923819869. The reversal of 1923819868 is 8689183291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923819869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127423 + ... + 141718.

It is an arithmetic number, because the mean of its divisors is an integer number (280715106).

Almost surely, 2^1923819868 is an apocalyptic number.

It is an amenable number.

1923819868 is a deficient number, since it is larger than the sum of its proper divisors (1444761404).

1923819868 is a wasteful number, since it uses less digits than its factorization.

1923819868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270932 (or 270930 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The square root of 1923819868 is about 43861.3710228032. The cubic root of 1923819868 is about 1243.7167076162.

The spelling of 1923819868 in words is "one billion, nine hundred twenty-three million, eight hundred nineteen thousand, eight hundred sixty-eight".