1316315838 has 16 divisors (see below), whose sum is σ = 2642003856. Its totient is φ = 437209920.

The previous prime is 1316315827. The next prime is 1316315867. The reversal of 1316315838 is 8385136131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1316315796 and 1316315805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388681 + ... + 392052.

It is an arithmetic number, because the mean of its divisors is an integer number (165125241).

Almost surely, 2^1316315838 is an apocalyptic number.

1316315838 is an abundant number, since it is smaller than the sum of its proper divisors (1325688018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316315838 is a wasteful number, since it uses less digits than its factorization.

1316315838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781019.

The product of its digits is 51840, while the sum is 39.

The square root of 1316315838 is about 36281.0672114259. The cubic root of 1316315838 is about 1095.9398082409.

The spelling of 1316315838 in words is "one billion, three hundred sixteen million, three hundred fifteen thousand, eight hundred thirty-eight".