1318663013 has 2 divisors, whose sum is σ = 1318663014. Its totient is φ = 1318663012.

The previous prime is 1318663009. The next prime is 1318663057. The reversal of 1318663013 is 3103668131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276061284 + 42601729 = 35722^2 + 6527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318663013 - 2² = 1318663009 is a prime.

It is a super-3 number, since 3×1318663013³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318663063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659331506 + 659331507.

It is an arithmetic number, because the mean of its divisors is an integer number (659331507).

Almost surely, 2^1318663013 is an apocalyptic number.

It is an amenable number.

1318663013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318663013 is an equidigital number, since it uses as much as digits as its factorization.

1318663013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1318663013 is about 36313.3999096752. The cubic root of 1318663013 is about 1096.5908260279.

The spelling of 1318663013 in words is "one billion, three hundred eighteen million, six hundred sixty-three thousand, thirteen".