1968504648773 has 8 divisors (see below), whose sum is σ = 2121043274616. Its totient is φ = 1816125336000.

The previous prime is 1968504648707. The next prime is 1968504648779. The reversal of 1968504648773 is 3778464058691.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125597942404 + 1842906706369 = 354398^2 + 1357537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1968504648773 - 2²² = 1968500454469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968504648779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39802598 + ... + 39852023.

It is an arithmetic number, because the mean of its divisors is an integer number (265130409327).

Almost surely, 2^{1968504648773} is an apocalyptic number.

1968504648773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1968504648773 is a deficient number, since it is larger than the sum of its proper divisors (152538625843).

1968504648773 is a wasteful number, since it uses less digits than its factorization.

1968504648773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79656535.

The product of its (nonzero) digits is 243855360, while the sum is 68.

The spelling of 1968504648773 in words is "one trillion, nine hundred sixty-eight billion, five hundred four million, six hundred forty-eight thousand, seven hundred seventy-three".