1318105 has 4 divisors (see below), whose sum is σ = 1581732. Its totient is φ = 1054480.

The previous prime is 1318103. The next prime is 1318139. The reversal of 1318105 is 5018131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5018131 = 29 ⋅173039.

It can be written as a sum of positive squares in 2 ways, for example, as 944784 + 373321 = 972^2 + 611^2 .

It is not a de Polignac number, because 1318105 - 2¹ = 1318103 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131806 + ... + 131815.

It is an arithmetic number, because the mean of its divisors is an integer number (395433).

2^1318105 is an apocalyptic number.

It is an amenable number.

1318105 is a deficient number, since it is larger than the sum of its proper divisors (263627).

1318105 is an equidigital number, since it uses as much as digits as its factorization.

1318105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263626.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1318105 is about 1148.0875402163. The cubic root of 1318105 is about 109.6436124318.

The spelling of 1318105 in words is "one million, three hundred eighteen thousand, one hundred five".