1317643038 has 160 divisors (see below), whose sum is σ = 3275468064. Its totient is φ = 394149888.

The previous prime is 1317643013. The next prime is 1317643049. The reversal of 1317643038 is 8303467131.

1317643038 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 643 + 0 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1317642993 and 1317643011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6827070 + ... + 6827262.

Almost surely, 2^1317643038 is an apocalyptic number.

1317643038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1317643038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1637734032).

1317643038 is an abundant number, since it is smaller than the sum of its proper divisors (1957825026).

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

1317643038 is a wasteful number, since it uses less digits than its factorization.

1317643038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1317643038 is about 36299.3531347323. The cubic root of 1317643038 is about 1096.3080184359.

The spelling of 1317643038 in words is "one billion, three hundred seventeen million, six hundred forty-three thousand, thirty-eight".