1919383868 has 6 divisors (see below), whose sum is σ = 3358921776. Its totient is φ = 959691932.

The previous prime is 1919383859. The next prime is 1919383871. The reversal of 1919383868 is 8683839191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239922980 + ... + 239922987.

It is an arithmetic number, because the mean of its divisors is an integer number (559820296).

Almost surely, 2^1919383868 is an apocalyptic number.

It is an amenable number.

1919383868 is a deficient number, since it is larger than the sum of its proper divisors (1439537908).

1919383868 is a wasteful number, since it uses less digits than its factorization.

1919383868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479845971 (or 479845969 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 56.

The square root of 1919383868 is about 43810.7734238965. The cubic root of 1919383868 is about 1242.7600391732.

The spelling of 1919383868 in words is "one billion, nine hundred nineteen million, three hundred eighty-three thousand, eight hundred sixty-eight".