2480745781 has 2 divisors, whose sum is σ = 2480745782. Its totient is φ = 2480745780.

The previous prime is 2480745733. The next prime is 2480745793. The reversal of 2480745781 is 1875470842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1471412881 + 1009332900 = 38359^2 + 31770^2 .

It is a cyclic number.

It is not a de Polignac number, because 2480745781 - 2³¹ = 333262133 is a prime.

It is a super-2 number, since 2×2480745781² = 12308199259898599922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2480745181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1240372890 + 1240372891.

It is an arithmetic number, because the mean of its divisors is an integer number (1240372891).

Almost surely, 2^2480745781 is an apocalyptic number.

It is an amenable number.

2480745781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2480745781 is an equidigital number, since it uses as much as digits as its factorization.

2480745781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 501760, while the sum is 46.

The square root of 2480745781 is about 49807.0856505377. The cubic root of 2480745781 is about 1353.7155588343.

The spelling of 2480745781 in words is "two billion, four hundred eighty million, seven hundred forty-five thousand, seven hundred eighty-one".