1318109 has 8 divisors (see below), whose sum is σ = 1454712. Its totient is φ = 1186560.

The previous prime is 1318103. The next prime is 1318139. The reversal of 1318109 is 9018131.

It can be written as a sum of positive squares in 4 ways, for example, as 2500 + 1315609 = 50^2 + 1147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1318109 - 2⁸ = 1317853 is a prime.

It is a super-2 number, since 2×1318109² = 3474822671762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704 + ... + 1769.

It is an arithmetic number, because the mean of its divisors is an integer number (181839).

2^1318109 is an apocalyptic number.

It is an amenable number.

1318109 is a deficient number, since it is larger than the sum of its proper divisors (136603).

1318109 is a wasteful number, since it uses less digits than its factorization.

1318109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1318109 is about 1148.0892822425. The cubic root of 1318109 is about 109.6437233420.

The spelling of 1318109 in words is "one million, three hundred eighteen thousand, one hundred nine".