1293768449 has 2 divisors, whose sum is σ = 1293768450. Its totient is φ = 1293768448.

The previous prime is 1293768433. The next prime is 1293768479. The reversal of 1293768449 is 9448673921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254930625 + 38837824 = 35425^2 + 6232^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293768449 - 2⁴ = 1293768433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1293768449.

It is not a weakly prime, because it can be changed into another prime (1293768419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646884224 + 646884225.

It is an arithmetic number, because the mean of its divisors is an integer number (646884225).

Almost surely, 2^1293768449 is an apocalyptic number.

It is an amenable number.

1293768449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293768449 is an equidigital number, since it uses as much as digits as its factorization.

1293768449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 53.

The square root of 1293768449 is about 35968.9928827595. The cubic root of 1293768449 is about 1089.6462250040.

The spelling of 1293768449 in words is "one billion, two hundred ninety-three million, seven hundred sixty-eight thousand, four hundred forty-nine".