2089261761 has 16 divisors (see below), whose sum is σ = 2885708160. Its totient is φ = 1342960640.

The previous prime is 2089261693. The next prime is 2089261781. The reversal of 2089261761 is 1671629802.

2089261761 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

2089261761 is a nontrivial binomial coefficient, being equal to C(64642, 2).

It is a cyclic number.

It is not a de Polignac number, because 2089261761 - 2¹¹ = 2089259713 is a prime.

It is a super-2 number, since 2×2089261761² = 8730029411953642242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2089261781) 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, 48481 + ... + 80801.

It is an arithmetic number, because the mean of its divisors is an integer number (180356760).

Almost surely, 2^2089261761 is an apocalyptic number.

2089261761 is the 64641-st triangular number and also the 32321-st hexagonal number.

It is an amenable number.

2089261761 is a deficient number, since it is larger than the sum of its proper divisors (796446399).

2089261761 is a wasteful number, since it uses less digits than its factorization.

2089261761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33096.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2089261761 is about 45708.4429947028. The cubic root of 2089261761 is about 1278.3927093426.

The spelling of 2089261761 in words is "two billion, eighty-nine million, two hundred sixty-one thousand, seven hundred sixty-one".