2816918893 has 4 divisors (see below), whose sum is σ = 2834200768. Its totient is φ = 2799637020.

The previous prime is 2816918873. The next prime is 2816918911. The reversal of 2816918893 is 3988196182.

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 2816918893 - 2²¹ = 2814821741 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 (2816918803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8640693 + ... + 8641018.

It is an arithmetic number, because the mean of its divisors is an integer number (708550192).

Almost surely, 2^2816918893 is an apocalyptic number.

It is an amenable number.

2816918893 is a deficient number, since it is larger than the sum of its proper divisors (17281875).

2816918893 is a wasteful number, since it uses less digits than its factorization.

2816918893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17281874.

The product of its digits is 1492992, while the sum is 55.

The square root of 2816918893 is about 53074.6539602474. The cubic root of 2816918893 is about 1412.2929164971.

The spelling of 2816918893 in words is "two billion, eight hundred sixteen million, nine hundred eighteen thousand, eight hundred ninety-three".