1317486381 has 8 divisors (see below), whose sum is σ = 1767837984. Its totient is φ = 872729520.

The previous prime is 1317486377. The next prime is 1317486413. The reversal of 1317486381 is 1836847131.

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

It is not a de Polignac number, because 1317486381 - 2² = 1317486377 is a prime.

It is a super-2 number, since 2×1317486381² = 3471540728240954322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317486371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398135 + ... + 1399076.

It is an arithmetic number, because the mean of its divisors is an integer number (220979748).

Almost surely, 2^1317486381 is an apocalyptic number.

It is an amenable number.

1317486381 is a deficient number, since it is larger than the sum of its proper divisors (450351603).

1317486381 is a wasteful number, since it uses less digits than its factorization.

1317486381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797371.

The product of its digits is 96768, while the sum is 42.

The square root of 1317486381 is about 36297.1952222207. The cubic root of 1317486381 is about 1096.2645693563.

The spelling of 1317486381 in words is "one billion, three hundred seventeen million, four hundred eighty-six thousand, three hundred eighty-one".