2783512081 has 9 divisors (see below), whose sum is σ = 3238392699. Its totient is φ = 2385550944.

The previous prime is 2783512073. The next prime is 2783512111. The reversal of 2783512081 is 1802153872.

The square root of 2783512081 is 52759.

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

It can be written as a sum of positive squares in only one way, i.e., 1198198225 + 1585313856 = 34615^2 + 39816^2 .

It is not a de Polignac number, because 2783512081 - 2³ = 2783512073 is a prime.

It is a super-2 number, since 2×2783512081² = 15495879010145901122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2783512081.

It is not an unprimeable number, because it can be changed into a prime (2783512681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 365545 + ... + 373081.

It is an arithmetic number, because the mean of its divisors is an integer number (359821411).

Almost surely, 2^2783512081 is an apocalyptic number.

2783512081 is the 52759-th square number.

2783512081 is the 26380-th centered octagonal number.

It is an amenable number.

2783512081 is a deficient number, since it is larger than the sum of its proper divisors (454880618).

2783512081 is an frugal number, since it uses more digits than its factorization.

2783512081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15088 (or 7544 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The cubic root of 2783512081 is about 1406.6877437138.

The spelling of 2783512081 in words is "two billion, seven hundred eighty-three million, five hundred twelve thousand, eighty-one".