2780000273 has 2 divisors, whose sum is σ = 2780000274. Its totient is φ = 2780000272.

The previous prime is 2780000221. The next prime is 2780000281. The reversal of 2780000273 is 3720000872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2680339984 + 99660289 = 51772^2 + 9983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2780000273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2780000213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390000136 + 1390000137.

It is an arithmetic number, because the mean of its divisors is an integer number (1390000137).

Almost surely, 2^2780000273 is an apocalyptic number.

It is an amenable number.

2780000273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780000273 is an equidigital number, since it uses as much as digits as its factorization.

2780000273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 2780000273 is about 52725.7078947263. The cubic root of 2780000273 is about 1406.0959139075.

The spelling of 2780000273 in words is "two billion, seven hundred eighty million, two hundred seventy-three", and thus it is an aban number.