1968263893 has 8 divisors (see below), whose sum is σ = 2174655168. Its totient is φ = 1771940544.

The previous prime is 1968263863. The next prime is 1968263911. The reversal of 1968263893 is 3983628691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968263893 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 (1968263833) 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, 2516571 + ... + 2517352.

It is an arithmetic number, because the mean of its divisors is an integer number (271831896).

Almost surely, 2^1968263893 is an apocalyptic number.

It is an amenable number.

1968263893 is a deficient number, since it is larger than the sum of its proper divisors (206391275).

1968263893 is a wasteful number, since it uses less digits than its factorization.

1968263893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033963.

The product of its digits is 3359232, while the sum is 55.

The square root of 1968263893 is about 44365.1202297481. The cubic root of 1968263893 is about 1253.2213218440.

The spelling of 1968263893 in words is "one billion, nine hundred sixty-eight million, two hundred sixty-three thousand, eight hundred ninety-three".