6168989893 has 4 divisors (see below), whose sum is σ = 6729807168. Its totient is φ = 5608172620.

The previous prime is 6168989891. The next prime is 6168989923. The reversal of 6168989893 is 3989898616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6168989893 - 2¹ = 6168989891 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 (6168989891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280408621 + ... + 280408642.

It is an arithmetic number, because the mean of its divisors is an integer number (1682451792).

Almost surely, 2^6168989893 is an apocalyptic number.

It is an amenable number.

6168989893 is a deficient number, since it is larger than the sum of its proper divisors (560817275).

6168989893 is a wasteful number, since it uses less digits than its factorization.

6168989893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560817274.

The product of its digits is 40310784, while the sum is 67.

The square root of 6168989893 is about 78542.9175228422. The cubic root of 6168989893 is about 1834.0226135858.

The spelling of 6168989893 in words is "six billion, one hundred sixty-eight million, nine hundred eighty-nine thousand, eight hundred ninety-three".