1313073638 has 8 divisors (see below), whose sum is σ = 1999007832. Its totient is φ = 646737696.

The previous prime is 1313073637. The next prime is 1313073677. The reversal of 1313073638 is 8363703131.

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 = 1313073598 and 1313073607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313073637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4899395 + ... + 4899662.

It is an arithmetic number, because the mean of its divisors is an integer number (249875979).

Almost surely, 2^1313073638 is an apocalyptic number.

1313073638 is a deficient number, since it is larger than the sum of its proper divisors (685934194).

1313073638 is an equidigital number, since it uses as much as digits as its factorization.

1313073638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9799126.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1313073638 is about 36236.3579571678. The cubic root of 1313073638 is about 1095.0392702220.

Adding to 1313073638 its reverse (8363703131), we get a palindrome (9676776769).

It can be divided in two parts, 13130 and 73638, that added together give a palindrome (86768).

The spelling of 1313073638 in words is "one billion, three hundred thirteen million, seventy-three thousand, six hundred thirty-eight".