1968193265 has 4 divisors (see below), whose sum is σ = 2361831924. Its totient is φ = 1574554608.

The previous prime is 1968193231. The next prime is 1968193301. The reversal of 1968193265 is 5623918691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5623918691 = 13723 ⋅409817.

It can be written as a sum of positive squares in 2 ways, for example, as 1170187264 + 798006001 = 34208^2 + 28249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968193265 is a prime.

It is a Duffinian 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, 196819322 + ... + 196819331.

It is an arithmetic number, because the mean of its divisors is an integer number (590457981).

Almost surely, 2^1968193265 is an apocalyptic number.

It is an amenable number.

1968193265 is a deficient number, since it is larger than the sum of its proper divisors (393638659).

1968193265 is an equidigital number, since it uses as much as digits as its factorization.

1968193265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393638658.

The product of its digits is 699840, while the sum is 50.

The square root of 1968193265 is about 44364.3242369361. The cubic root of 1968193265 is about 1253.2063317174.

The spelling of 1968193265 in words is "one billion, nine hundred sixty-eight million, one hundred ninety-three thousand, two hundred sixty-five".