2781067273 has 2 divisors, whose sum is σ = 2781067274. Its totient is φ = 2781067272.

The previous prime is 2781067249. The next prime is 2781067277. The reversal of 2781067273 is 3727601872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1421817849 + 1359249424 = 37707^2 + 36868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2781067273 - 2²¹ = 2778970121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2781067277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390533636 + 1390533637.

It is an arithmetic number, because the mean of its divisors is an integer number (1390533637).

Almost surely, 2^2781067273 is an apocalyptic number.

It is an amenable number.

2781067273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781067273 is an equidigital number, since it uses as much as digits as its factorization.

2781067273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 2781067273 is about 52735.8253277599. The cubic root of 2781067273 is about 1406.2757834864.

The spelling of 2781067273 in words is "two billion, seven hundred eighty-one million, sixty-seven thousand, two hundred seventy-three".