1926843819664 has 45 divisors (see below), whose sum is σ = 3758069027433. Its totient is φ = 957061598976.

The previous prime is 1926843819653. The next prime is 1926843819671. The reversal of 1926843819664 is 4669183486291.

The square root of 1926843819664 is 1388108.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 487611717264 + 1439232102400 = 698292^2 + 1199680^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1926843819664.

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 8 ways as a sum of consecutive naturals, for example, 905045352 + ... + 905047480.

Almost surely, 2^{1926843819664} is an apocalyptic number.

1926843819664 is the 1388108-th square number.

It is an amenable number.

1926843819664 is a deficient number, since it is larger than the sum of its proper divisors (1831225207769).

1926843819664 is an frugal number, since it uses more digits than its factorization.

1926843819664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 2294 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 67.

The spelling of 1926843819664 in words is "one trillion, nine hundred twenty-six billion, eight hundred forty-three million, eight hundred nineteen thousand, six hundred sixty-four".