1919993712 has 80 divisors (see below), whose sum is σ = 6104609280. Its totient is φ = 506370816.

The previous prime is 1919993641. The next prime is 1919993723. The reversal of 1919993712 is 2173999191.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215412 + ... + 224147.

It is an arithmetic number, because the mean of its divisors is an integer number (76307616).

Almost surely, 2^1919993712 is an apocalyptic number.

1919993712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1919993712 is an abundant number, since it is smaller than the sum of its proper divisors (4184615568).

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

1919993712 is a wasteful number, since it uses less digits than its factorization.

1919993712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439590 (or 439584 counting only the distinct ones).

The product of its digits is 275562, while the sum is 51.

The square root of 1919993712 is about 43817.7328486995. The cubic root of 1919993712 is about 1242.8916455552.

The spelling of 1919993712 in words is "one billion, nine hundred nineteen million, nine hundred ninety-three thousand, seven hundred twelve".