2781064453 has 2 divisors, whose sum is σ = 2781064454. Its totient is φ = 2781064452.

The previous prime is 2781064439. The next prime is 2781064469. The reversal of 2781064453 is 3544601872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2279394049 + 501670404 = 47743^2 + 22398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2781064453 - 2⁵ = 2781064421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2781064423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390532226 + 1390532227.

It is an arithmetic number, because the mean of its divisors is an integer number (1390532227).

Almost surely, 2^2781064453 is an apocalyptic number.

It is an amenable number.

2781064453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781064453 is an equidigital number, since it uses as much as digits as its factorization.

2781064453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 2781064453 is about 52735.7985907107. The cubic root of 2781064453 is about 1406.2753081654.

The spelling of 2781064453 in words is "two billion, seven hundred eighty-one million, sixty-four thousand, four hundred fifty-three".