1919368144 has 20 divisors (see below), whose sum is σ = 3914501440. Its totient is φ = 909174240.

The previous prime is 1919368127. The next prime is 1919368151. The reversal of 1919368144 is 4418639191.

It is a junction number, because it is equal to n+sod(n) for n = 1919368094 and 1919368103.

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, 3156552 + ... + 3157159.

It is an arithmetic number, because the mean of its divisors is an integer number (195725072).

Almost surely, 2^1919368144 is an apocalyptic number.

It is an amenable number.

1919368144 is an abundant number, since it is smaller than the sum of its proper divisors (1995133296).

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

1919368144 is a wasteful number, since it uses less digits than its factorization.

1919368144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313738 (or 6313732 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 1919368144 is about 43810.5939699521. The cubic root of 1919368144 is about 1242.7566455126.

The spelling of 1919368144 in words is "one billion, nine hundred nineteen million, three hundred sixty-eight thousand, one hundred forty-four".