1318945075645 has 8 divisors (see below), whose sum is σ = 1582963281504. Its totient is φ = 1055003266704.

The previous prime is 1318945075639. The next prime is 1318945075661. The reversal of 1318945075645 is 5465705498131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1318945075645 - 2¹¹ = 1318945073597 is a prime.

It is a super-2 number, since 2×1318945075645² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318945075645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19061239 + ... + 19130308.

It is an arithmetic number, because the mean of its divisors is an integer number (197870410188).

Almost surely, 2^{1318945075645} is an apocalyptic number.

It is an amenable number.

1318945075645 is a deficient number, since it is larger than the sum of its proper divisors (264018205859).

1318945075645 is an equidigital number, since it uses as much as digits as its factorization.

1318945075645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38198459.

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 1318945075645 in words is "one trillion, three hundred eighteen billion, nine hundred forty-five million, seventy-five thousand, six hundred forty-five".