1313186841 has 6 divisors (see below), whose sum is σ = 1896825450. Its totient is φ = 875457888.

The previous prime is 1313186839. The next prime is 1313186857. The reversal of 1313186841 is 1486813131.

It can be written as a sum of positive squares in only one way, i.e., 771228441 + 541958400 = 27771^2 + 23280^2 .

It is not a de Polignac number, because 1313186841 - 2¹ = 1313186839 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1313186796 and 1313186805.

It is not an unprimeable number, because it can be changed into a prime (1313186821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72954816 + ... + 72954833.

It is an arithmetic number, because the mean of its divisors is an integer number (316137575).

Almost surely, 2^1313186841 is an apocalyptic number.

It is an amenable number.

1313186841 is a deficient number, since it is larger than the sum of its proper divisors (583638609).

1313186841 is a wasteful number, since it uses less digits than its factorization.

1313186841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145909655 (or 145909652 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1313186841 is about 36237.9199320270. The cubic root of 1313186841 is about 1095.0707379084.

Adding to 1313186841 its reverse (1486813131), we get a palindrome (2799999972).

The spelling of 1313186841 in words is "one billion, three hundred thirteen million, one hundred eighty-six thousand, eight hundred forty-one".