1318081 has 4 divisors (see below), whose sum is σ = 1323972. Its totient is φ = 1312192.

The previous prime is 1318073. The next prime is 1318099. The reversal of 1318081 is 1808131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 194481 + 1123600 = 441^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318081 - 2³ = 1318073 is a prime.

It is a super-2 number, since 2×1318081² = 3474675045122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318781) 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, 2596 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (330993).

2^1318081 is an apocalyptic number.

It is an amenable number.

1318081 is a deficient number, since it is larger than the sum of its proper divisors (5891).

1318081 is an equidigital number, since it uses as much as digits as its factorization.

1318081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1318081 is about 1148.0770880041. The cubic root of 1318081 is about 109.6429469656.

The spelling of 1318081 in words is "one million, three hundred eighteen thousand, eighty-one".