2778754067 has 2 divisors, whose sum is σ = 2778754068. Its totient is φ = 2778754066.

The previous prime is 2778754063. The next prime is 2778754169. The reversal of 2778754067 is 7604578772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2778754067 - 2² = 2778754063 is a prime.

It is not a weakly prime, because it can be changed into another prime (2778754061) 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 as a sum of consecutive naturals, namely, 1389377033 + 1389377034.

It is an arithmetic number, because the mean of its divisors is an integer number (1389377034).

Almost surely, 2^2778754067 is an apocalyptic number.

2778754067 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778754067 is an equidigital number, since it uses as much as digits as its factorization.

2778754067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4609920, while the sum is 53.

The square root of 2778754067 is about 52713.8887486021. Note that the first 3 decimals coincide. The cubic root of 2778754067 is about 1405.8857763903.

The spelling of 2778754067 in words is "two billion, seven hundred seventy-eight million, seven hundred fifty-four thousand, sixty-seven".