1968815344 has 20 divisors (see below), whose sum is σ = 3815742880. Its totient is φ = 984107520.

The previous prime is 1968815323. The next prime is 1968815357. The reversal of 1968815344 is 4435188691.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41152 + ... + 75040.

It is an arithmetic number, because the mean of its divisors is an integer number (190787144).

Almost surely, 2^1968815344 is an apocalyptic number.

It is an amenable number.

1968815344 is a deficient number, since it is larger than the sum of its proper divisors (1846927536).

1968815344 is a wasteful number, since it uses less digits than its factorization.

1968815344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37528 (or 37522 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 1968815344 is about 44371.3347105989. The cubic root of 1968815344 is about 1253.3383497863.

The spelling of 1968815344 in words is "one billion, nine hundred sixty-eight million, eight hundred fifteen thousand, three hundred forty-four".