1317365906 has 4 divisors (see below), whose sum is σ = 1976048862. Its totient is φ = 658682952.

The previous prime is 1317365897. The next prime is 1317365909. The reversal of 1317365906 is 6095637131.

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., 1045940281 + 271425625 = 32341^2 + 16475^2 .

It is not an unprimeable number, because it can be changed into a prime (1317365909) 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, 329341475 + ... + 329341478.

Almost surely, 2^1317365906 is an apocalyptic number.

1317365906 is a deficient number, since it is larger than the sum of its proper divisors (658682956).

1317365906 is an equidigital number, since it uses as much as digits as its factorization.

1317365906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658682955.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1317365906 is about 36295.5356207895. The cubic root of 1317365906 is about 1096.2311530716.

The spelling of 1317365906 in words is "one billion, three hundred seventeen million, three hundred sixty-five thousand, nine hundred six".