1283393791 has 2 divisors, whose sum is σ = 1283393792. Its totient is φ = 1283393790.

The previous prime is 1283393773. The next prime is 1283393807. The reversal of 1283393791 is 1973933821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1283393791 - 2¹³ = 1283385599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283393731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641696895 + 641696896.

It is an arithmetic number, because the mean of its divisors is an integer number (641696896).

Almost surely, 2^1283393791 is an apocalyptic number.

1283393791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283393791 is an equidigital number, since it uses as much as digits as its factorization.

1283393791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 1283393791 is about 35824.4859139667. The cubic root of 1283393791 is about 1086.7258004233.

The spelling of 1283393791 in words is "one billion, two hundred eighty-three million, three hundred ninety-three thousand, seven hundred ninety-one".