6918233869 has 2 divisors, whose sum is σ = 6918233870. Its totient is φ = 6918233868.

The previous prime is 6918233831. The next prime is 6918233879. The reversal of 6918233869 is 9683328196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4229811369 + 2688422500 = 65037^2 + 51850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6918233869 is a prime.

It is a super-2 number, since 2×6918233869² = 95723919732357418322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6918233879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3459116934 + 3459116935.

It is an arithmetic number, because the mean of its divisors is an integer number (3459116935).

Almost surely, 2^6918233869 is an apocalyptic number.

It is an amenable number.

6918233869 is a deficient number, since it is larger than the sum of its proper divisors (1).

6918233869 is an equidigital number, since it uses as much as digits as its factorization.

6918233869 is an evil number, because the sum of its binary digits is even.

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

The square root of 6918233869 is about 83175.9212092057. The cubic root of 6918233869 is about 1905.4537552303.

The spelling of 6918233869 in words is "six billion, nine hundred eighteen million, two hundred thirty-three thousand, eight hundred sixty-nine".