2833778081 has 4 divisors (see below), whose sum is σ = 2835536532. Its totient is φ = 2832019632.

The previous prime is 2833778063. The next prime is 2833778113. The reversal of 2833778081 is 1808773382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1997643025 + 836135056 = 44695^2 + 28916^2 .

It is a cyclic number.

It is not a de Polignac number, because 2833778081 - 2¹⁰ = 2833777057 is a prime.

It is a super-2 number, since 2×2833778081² = 16060596424712085122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2833778011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876806 + ... + 880031.

It is an arithmetic number, because the mean of its divisors is an integer number (708884133).

Almost surely, 2^2833778081 is an apocalyptic number.

It is an amenable number.

2833778081 is a deficient number, since it is larger than the sum of its proper divisors (1758451).

2833778081 is a wasteful number, since it uses less digits than its factorization.

2833778081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758450.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 2833778081 is about 53233.2422551924. The cubic root of 2833778081 is about 1415.1048266058.

The spelling of 2833778081 in words is "two billion, eight hundred thirty-three million, seven hundred seventy-eight thousand, eighty-one".