1318979099 has 12 divisors (see below), whose sum is σ = 1340214240. Its totient is φ = 1298052000.

The previous prime is 1318979089. The next prime is 1318979159. The reversal of 1318979099 is 9909798131.

It is a de Polignac number, because none of the positive numbers 2^k-1318979099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318979009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2437769 + ... + 2438309.

It is an arithmetic number, because the mean of its divisors is an integer number (111684520).

Almost surely, 2^1318979099 is an apocalyptic number.

1318979099 is a deficient number, since it is larger than the sum of its proper divisors (21235141).

1318979099 is an equidigital number, since it uses as much as digits as its factorization.

1318979099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 56.

The square root of 1318979099 is about 36317.7518439674. The cubic root of 1318979099 is about 1096.6784373214.

The spelling of 1318979099 in words is "one billion, three hundred eighteen million, nine hundred seventy-nine thousand, ninety-nine".