889518718449 has 27 divisors (see below), whose sum is σ = 1364960086113. Its totient is φ = 558099211392.

The previous prime is 889518718421. The next prime is 889518718477. The reversal of 889518718449 is 944817815988.

The square root of 889518718449 is 943143.

It is a perfect power (a square), and thus also a powerful number.

889518718449 is a `hidden beast` number, since 8 + 8 + 95 + 1 + 87 + 18 + 449 = 666.

It is an interprime number because it is at equal distance from previous prime (889518718421) and next prime (889518718477).

It can be written as a sum of positive squares in 4 ways, for example, as 34966382049 + 854552336400 = 186993^2 + 924420^2 .

It is not a de Polignac number, because 889518718449 - 2⁷ = 889518718321 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (889518711449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48091047 + ... + 48109539.

Almost surely, 2^889518718449 is an apocalyptic number.

889518718449 is the 943143-rd square number.

889518718449 is the 471572-nd centered octagonal number.

It is an amenable number.

889518718449 is a deficient number, since it is larger than the sum of its proper divisors (475441367664).

889518718449 is an frugal number, since it uses more digits than its factorization.

889518718449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37026 (or 18513 counting only the distinct ones).

The product of its digits is 185794560, while the sum is 72.

The spelling of 889518718449 in words is "eight hundred eighty-nine billion, five hundred eighteen million, seven hundred eighteen thousand, four hundred forty-nine".