1318198867 has 2 divisors, whose sum is σ = 1318198868. Its totient is φ = 1318198866.

The previous prime is 1318198859. The next prime is 1318198877. The reversal of 1318198867 is 7688918131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318198867 - 2³ = 1318198859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318198877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659099433 + 659099434.

It is an arithmetic number, because the mean of its divisors is an integer number (659099434).

Almost surely, 2^1318198867 is an apocalyptic number.

1318198867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318198867 is an equidigital number, since it uses as much as digits as its factorization.

1318198867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 52.

The square root of 1318198867 is about 36307.0085107545. The cubic root of 1318198867 is about 1096.4621507537.

The spelling of 1318198867 in words is "one billion, three hundred eighteen million, one hundred ninety-eight thousand, eight hundred sixty-seven".