1293805868 has 6 divisors (see below), whose sum is σ = 2264160276. Its totient is φ = 646902932.

The previous prime is 1293805861. The next prime is 1293805921. The reversal of 1293805868 is 8685083921.

It is not an unprimeable number, because it can be changed into a prime (1293805861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161725730 + ... + 161725737.

It is an arithmetic number, because the mean of its divisors is an integer number (377360046).

Almost surely, 2^1293805868 is an apocalyptic number.

It is an amenable number.

1293805868 is a deficient number, since it is larger than the sum of its proper divisors (970354408).

1293805868 is a wasteful number, since it uses less digits than its factorization.

1293805868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323451471 (or 323451469 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 1293805868 is about 35969.5130353470. The cubic root of 1293805868 is about 1089.6567299953.

The spelling of 1293805868 in words is "one billion, two hundred ninety-three million, eight hundred five thousand, eight hundred sixty-eight".