1312768838 has 8 divisors (see below), whose sum is σ = 2054768688. Its totient is φ = 627845944.

The previous prime is 1312768829. The next prime is 1312768841. The reversal of 1312768838 is 8388672131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1312768792 and 1312768801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14269181 + ... + 14269272.

It is an arithmetic number, because the mean of its divisors is an integer number (256846086).

Almost surely, 2^1312768838 is an apocalyptic number.

1312768838 is a deficient number, since it is larger than the sum of its proper divisors (741999850).

1312768838 is a wasteful number, since it uses less digits than its factorization.

1312768838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28538478.

The product of its digits is 387072, while the sum is 47.

The square root of 1312768838 is about 36232.1519923948. The cubic root of 1312768838 is about 1094.9545342284.

The spelling of 1312768838 in words is "one billion, three hundred twelve million, seven hundred sixty-eight thousand, eight hundred thirty-eight".