2718989489 has 4 divisors (see below), whose sum is σ = 2719276656. Its totient is φ = 2718702324.

The previous prime is 2718989473. The next prime is 2718989491. The reversal of 2718989489 is 9849898172.

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 2718989489 - 2⁴ = 2718989473 is a prime.

It is a super-2 number, since 2×2718989489² = 14785807682584962242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2718989419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128879 + ... + 148484.

It is an arithmetic number, because the mean of its divisors is an integer number (679819164).

Almost surely, 2^2718989489 is an apocalyptic number.

It is an amenable number.

2718989489 is a deficient number, since it is larger than the sum of its proper divisors (287167).

2718989489 is an equidigital number, since it uses as much as digits as its factorization.

2718989489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287166.

The product of its digits is 20901888, while the sum is 65.

The square root of 2718989489 is about 52143.9305096959. The cubic root of 2718989489 is about 1395.7335229235.

The spelling of 2718989489 in words is "two billion, seven hundred eighteen million, nine hundred eighty-nine thousand, four hundred eighty-nine".