1318906 has 4 divisors (see below), whose sum is σ = 1978362. Its totient is φ = 659452.

The previous prime is 1318903. The next prime is 1318913. The reversal of 1318906 is 6098131.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 235225 = 1041^2 + 485^2 .

It is not an unprimeable number, because it can be changed into a prime (1318901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329725 + ... + 329728.

2^1318906 is an apocalyptic number.

1318906 is a deficient number, since it is larger than the sum of its proper divisors (659456).

1318906 is an equidigital number, since it uses as much as digits as its factorization.

1318906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659455.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1318906 is about 1148.4363282307. The cubic root of 1318906 is about 109.6658177314.

The spelling of 1318906 in words is "one million, three hundred eighteen thousand, nine hundred six".