2089312681 has 9 divisors (see below), whose sum is σ = 2141045469. Its totient is φ = 2038804236.

The previous prime is 2089312607. The next prime is 2089312697. The reversal of 2089312681 is 1862139802.

The square root of 2089312681 is 45709.

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

It is not a de Polignac number, because 2089312681 - 2⁷ = 2089312553 is a prime.

It is a super-2 number, since 2×2089312681² = 8730454957974815522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2089312601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1964956 + ... + 1966018.

It is an arithmetic number, because the mean of its divisors is an integer number (237893941).

Almost surely, 2^2089312681 is an apocalyptic number.

2089312681 is the 45709-th square number.

2089312681 is the 22855-th centered octagonal number.

It is an amenable number.

2089312681 is a deficient number, since it is larger than the sum of its proper divisors (51732788).

2089312681 is an frugal number, since it uses more digits than its factorization.

2089312681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The cubic root of 2089312681 is about 1278.4030950251.

The spelling of 2089312681 in words is "two billion, eighty-nine million, three hundred twelve thousand, six hundred eighty-one".