1293863243 has 2 divisors, whose sum is σ = 1293863244. Its totient is φ = 1293863242.

The previous prime is 1293863167. The next prime is 1293863257. The reversal of 1293863243 is 3423683921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1293863243 - 2¹⁴ = 1293846859 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1293863243.

It is not a weakly prime, because it can be changed into another prime (1293823243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646931621 + 646931622.

It is an arithmetic number, because the mean of its divisors is an integer number (646931622).

Almost surely, 2^1293863243 is an apocalyptic number.

1293863243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293863243 is an equidigital number, since it uses as much as digits as its factorization.

1293863243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The square root of 1293863243 is about 35970.3105769188. The cubic root of 1293863243 is about 1089.6728370307.

The spelling of 1293863243 in words is "one billion, two hundred ninety-three million, eight hundred sixty-three thousand, two hundred forty-three".