1968719611 has 8 divisors (see below), whose sum is σ = 2048650560. Its totient is φ = 1890340872.

The previous prime is 1968719581. The next prime is 1968719647. The reversal of 1968719611 is 1169178691.

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 1968719611 - 2¹¹ = 1968717563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968719671) 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, 385465 + ... + 390538.

It is an arithmetic number, because the mean of its divisors is an integer number (256081320).

Almost surely, 2^1968719611 is an apocalyptic number.

1968719611 is a deficient number, since it is larger than the sum of its proper divisors (79930949).

1968719611 is an equidigital number, since it uses as much as digits as its factorization.

1968719611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776105.

The product of its digits is 163296, while the sum is 49.

The square root of 1968719611 is about 44370.2559266903. The cubic root of 1968719611 is about 1253.3180350683.

The spelling of 1968719611 in words is "one billion, nine hundred sixty-eight million, seven hundred nineteen thousand, six hundred eleven".