2778033213 has 16 divisors (see below), whose sum is σ = 4193259840. Its totient is φ = 1817077392.

The previous prime is 2778033191. The next prime is 2778033217. The reversal of 2778033213 is 3123308772.

It is not a de Polignac number, because 2778033213 - 2⁹ = 2778032701 is a prime.

It is a super-2 number, since 2×2778033213² = 15434937065062206738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778033217) 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 15 ways as a sum of consecutive naturals, for example, 969231 + ... + 972092.

It is an arithmetic number, because the mean of its divisors is an integer number (262078740).

Almost surely, 2^2778033213 is an apocalyptic number.

It is an amenable number.

2778033213 is a deficient number, since it is larger than the sum of its proper divisors (1415226627).

2778033213 is a wasteful number, since it uses less digits than its factorization.

2778033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941385 (or 1941379 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 2778033213 is about 52707.0508850571. The cubic root of 2778033213 is about 1405.7641959976.

The spelling of 2778033213 in words is "two billion, seven hundred seventy-eight million, thirty-three thousand, two hundred thirteen".