1241783791 has 2 divisors, whose sum is σ = 1241783792. Its totient is φ = 1241783790.

The previous prime is 1241783749. The next prime is 1241783821. The reversal of 1241783791 is 1973871421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1241783791 - 2¹³ = 1241775599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241783591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620891895 + 620891896.

It is an arithmetic number, because the mean of its divisors is an integer number (620891896).

Almost surely, 2^1241783791 is an apocalyptic number.

1241783791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241783791 is an equidigital number, since it uses as much as digits as its factorization.

1241783791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 1241783791 is about 35238.9527511815. The cubic root of 1241783791 is about 1074.8519835146.

The spelling of 1241783791 in words is "one billion, two hundred forty-one million, seven hundred eighty-three thousand, seven hundred ninety-one".