1318948999 has 2 divisors, whose sum is σ = 1318949000. Its totient is φ = 1318948998.

The previous prime is 1318948997. The next prime is 1318949017. The reversal of 1318948999 is 9998498131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318948999 - 2¹ = 1318948997 is a prime.

Together with 1318948997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318948997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659474499 + 659474500.

It is an arithmetic number, because the mean of its divisors is an integer number (659474500).

Almost surely, 2^1318948999 is an apocalyptic number.

1318948999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318948999 is an equidigital number, since it uses as much as digits as its factorization.

1318948999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 61.

The square root of 1318948999 is about 36317.3374437059. The cubic root of 1318948999 is about 1096.6700949420.

The spelling of 1318948999 in words is "one billion, three hundred eighteen million, nine hundred forty-eight thousand, nine hundred ninety-nine".