6891219489 has 16 divisors (see below), whose sum is σ = 11455534080. Its totient is φ = 3579854160.

The previous prime is 6891219487. The next prime is 6891219523. The reversal of 6891219489 is 9849121986.

It is not a de Polignac number, because 6891219489 - 2¹ = 6891219487 is a prime.

It is a super-2 number, since 2×6891219489² = 94977812091146842242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6891219487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14915829 + ... + 14916290.

It is an arithmetic number, because the mean of its divisors is an integer number (715970880).

Almost surely, 2^6891219489 is an apocalyptic number.

It is an amenable number.

6891219489 is a deficient number, since it is larger than the sum of its proper divisors (4564314591).

6891219489 is a wasteful number, since it uses less digits than its factorization.

6891219489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29832140.

The product of its digits is 2239488, while the sum is 57.

The square root of 6891219489 is about 83013.3693389203. The cubic root of 6891219489 is about 1902.9703758942.

The spelling of 6891219489 in words is "six billion, eight hundred ninety-one million, two hundred nineteen thousand, four hundred eighty-nine".