2781014749 has 2 divisors, whose sum is σ = 2781014750. Its totient is φ = 2781014748.

The previous prime is 2781014713. The next prime is 2781014771. The reversal of 2781014749 is 9474101872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2216714724 + 564300025 = 47082^2 + 23755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2781014749 - 2⁹ = 2781014237 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2781014149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390507374 + 1390507375.

It is an arithmetic number, because the mean of its divisors is an integer number (1390507375).

Almost surely, 2^2781014749 is an apocalyptic number.

It is an amenable number.

2781014749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781014749 is an equidigital number, since it uses as much as digits as its factorization.

2781014749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 2781014749 is about 52735.3273337712. The cubic root of 2781014749 is about 1406.2669303272.

The spelling of 2781014749 in words is "two billion, seven hundred eighty-one million, fourteen thousand, seven hundred forty-nine".