1315818701 has 2 divisors, whose sum is σ = 1315818702. Its totient is φ = 1315818700.

The previous prime is 1315818629. The next prime is 1315818703. The reversal of 1315818701 is 1078185131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1315803076 + 15625 = 36274^2 + 125^2 .

It is an emirp because it is prime and its reverse (1078185131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315818701 - 2¹⁰ = 1315817677 is a prime.

It is a Sophie Germain prime.

Together with 1315818703, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315818703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657909350 + 657909351.

It is an arithmetic number, because the mean of its divisors is an integer number (657909351).

Almost surely, 2^1315818701 is an apocalyptic number.

It is an amenable number.

1315818701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315818701 is an equidigital number, since it uses as much as digits as its factorization.

1315818701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 35.

The square root of 1315818701 is about 36274.2153740091. The cubic root of 1315818701 is about 1095.8018218963.

The spelling of 1315818701 in words is "one billion, three hundred fifteen million, eight hundred eighteen thousand, seven hundred one".