2479141781 has 2 divisors, whose sum is σ = 2479141782. Its totient is φ = 2479141780.

The previous prime is 2479141699. The next prime is 2479141813. The reversal of 2479141781 is 1871419742.

2479141781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2140912900 + 338228881 = 46270^2 + 18391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2479141781 is a prime.

It is a super-2 number, since 2×2479141781² = 12292287940599703922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2479143781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239570890 + 1239570891.

It is an arithmetic number, because the mean of its divisors is an integer number (1239570891).

Almost surely, 2^2479141781 is an apocalyptic number.

It is an amenable number.

2479141781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2479141781 is an equidigital number, since it uses as much as digits as its factorization.

2479141781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 44.

The square root of 2479141781 is about 49790.9809202430. The cubic root of 2479141781 is about 1353.4237342377.

The spelling of 2479141781 in words is "two billion, four hundred seventy-nine million, one hundred forty-one thousand, seven hundred eighty-one".