2784381851 has 2 divisors, whose sum is σ = 2784381852. Its totient is φ = 2784381850.

The previous prime is 2784381833. The next prime is 2784381869. The reversal of 2784381851 is 1581834872.

It is a balanced prime because it is at equal distance from previous prime (2784381833) and next prime (2784381869).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2784381851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2784381796 and 2784381805.

It is not a weakly prime, because it can be changed into another prime (2784381251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392190925 + 1392190926.

It is an arithmetic number, because the mean of its divisors is an integer number (1392190926).

Almost surely, 2^2784381851 is an apocalyptic number.

2784381851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2784381851 is an equidigital number, since it uses as much as digits as its factorization.

2784381851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 47.

The square root of 2784381851 is about 52767.2422152229. The cubic root of 2784381851 is about 1406.8342453695.

The spelling of 2784381851 in words is "two billion, seven hundred eighty-four million, three hundred eighty-one thousand, eight hundred fifty-one".