2836521081 has 27 divisors (see below), whose sum is σ = 4209287277. Its totient is φ = 1840631040.

The previous prime is 2836521073. The next prime is 2836521091. The reversal of 2836521081 is 1801256382.

It is a happy number.

The square root of 2836521081 is 53259.

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

2836521081 is a `hidden beast` number, since 2 + 8 + 365 + 210 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2029052025 + 807469056 = 45045^2 + 28416^2 .

It is not a de Polignac number, because 2836521081 - 2³ = 2836521073 is a prime.

It is a super-2 number, since 2×2836521081² = 16091703685914817122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2836521031) 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, 6550641 + ... + 6551073.

Almost surely, 2^2836521081 is an apocalyptic number.

2836521081 is the 53259-th square number.

2836521081 is the 26630-th centered octagonal number.

It is an amenable number.

2836521081 is a deficient number, since it is larger than the sum of its proper divisors (1372766196).

2836521081 is an frugal number, since it uses more digits than its factorization.

2836521081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The cubic root of 2836521081 is about 1415.5612703442.

Multiplying 2836521081 by its sum of digits (36), we get a square (102114758916 = 319554²).

The spelling of 2836521081 in words is "two billion, eight hundred thirty-six million, five hundred twenty-one thousand, eighty-one".