2089495521 has 21 divisors (see below), whose sum is σ = 3134661699. Its totient is φ = 1392174216.

The previous prime is 2089495489. The next prime is 2089495523. The reversal of 2089495521 is 1255949802.

It is a happy number.

The square root of 2089495521 is 45711.

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

2089495521 is a `hidden beast` number, since 2 + 0 + 8 + 94 + 9 + 552 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 796086225 + 1293409296 = 28215^2 + 35964^2 .

It is not a de Polignac number, because 2089495521 - 2⁵ = 2089495489 is a prime.

It is a super-2 number, since 2×2089495521² = 8731983064558122882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2089495523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1233351 + ... + 1235043.

Almost surely, 2^2089495521 is an apocalyptic number.

2089495521 is the 45711-st square number.

2089495521 is the 22856-th centered octagonal number.

It is an amenable number.

2089495521 is a deficient number, since it is larger than the sum of its proper divisors (1045166178).

2089495521 is an frugal number, since it uses more digits than its factorization.

2089495521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The cubic root of 2089495521 is about 1278.4403858218.

The spelling of 2089495521 in words is "two billion, eighty-nine million, four hundred ninety-five thousand, five hundred twenty-one".