919893812 has 12 divisors (see below), whose sum is σ = 1620476256. Its totient is φ = 456900600.

The previous prime is 919893803. The next prime is 919893829. The reversal of 919893812 is 218398919.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 760898 + ... + 762105.

It is an arithmetic number, because the mean of its divisors is an integer number (135039688).

Almost surely, 2^919893812 is an apocalyptic number.

It is an amenable number.

919893812 is a deficient number, since it is larger than the sum of its proper divisors (700582444).

919893812 is a wasteful number, since it uses less digits than its factorization.

919893812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523158 (or 1523156 counting only the distinct ones).

The product of its digits is 279936, while the sum is 50.

The square root of 919893812 is about 30329.7512683504. The cubic root of 919893812 is about 972.5514054812.

The spelling of 919893812 in words is "nine hundred nineteen million, eight hundred ninety-three thousand, eight hundred twelve".