1318217245 has 32 divisors (see below), whose sum is σ = 1709959680. Its totient is φ = 972336960.

The previous prime is 1318217191. The next prime is 1318217249. The reversal of 1318217245 is 5427128131.

It is not a de Polignac number, because 1318217245 - 2¹⁵ = 1318184477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1318217245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318217249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1907350 + ... + 1908040.

It is an arithmetic number, because the mean of its divisors is an integer number (53436240).

Almost surely, 2^1318217245 is an apocalyptic number.

It is an amenable number.

1318217245 is a deficient number, since it is larger than the sum of its proper divisors (391742435).

1318217245 is a wasteful number, since it uses less digits than its factorization.

1318217245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225.

The product of its digits is 13440, while the sum is 34.

The square root of 1318217245 is about 36307.2616015034. The cubic root of 1318217245 is about 1096.4672462640.

The spelling of 1318217245 in words is "one billion, three hundred eighteen million, two hundred seventeen thousand, two hundred forty-five".