1313955847 has 2 divisors, whose sum is σ = 1313955848. Its totient is φ = 1313955846.

The previous prime is 1313955821. The next prime is 1313955883. The reversal of 1313955847 is 7485593131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313955847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313955797 and 1313955806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313955047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656977923 + 656977924.

It is an arithmetic number, because the mean of its divisors is an integer number (656977924).

Almost surely, 2^1313955847 is an apocalyptic number.

1313955847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313955847 is an equidigital number, since it uses as much as digits as its factorization.

1313955847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 1313955847 is about 36248.5288942876. The cubic root of 1313955847 is about 1095.2844550565.

It can be divided in two parts, 13139 and 55847, that added together give a palindrome (68986).

The spelling of 1313955847 in words is "one billion, three hundred thirteen million, nine hundred fifty-five thousand, eight hundred forty-seven".