1318206437745 has 16 divisors (see below), whose sum is σ = 2181858932160. Its totient is φ = 678800556224.

The previous prime is 1318206437731. The next prime is 1318206437791. The reversal of 1318206437745 is 5477346028131.

It is a cyclic number.

It is not a de Polignac number, because 1318206437745 - 2¹⁰ = 1318206436721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1515179379 + ... + 1515180248.

It is an arithmetic number, because the mean of its divisors is an integer number (136366183260).

Almost surely, 2^{1318206437745} is an apocalyptic number.

1318206437745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1318206437745 is a deficient number, since it is larger than the sum of its proper divisors (863652494415).

1318206437745 is a wasteful number, since it uses less digits than its factorization.

1318206437745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030359664.

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 1318206437745 in words is "one trillion, three hundred eighteen billion, two hundred six million, four hundred thirty-seven thousand, seven hundred forty-five".