1218347828135 has 8 divisors (see below), whose sum is σ = 1470468362400. Its totient is φ = 969044283424.

The previous prime is 1218347828129. The next prime is 1218347828177. The reversal of 1218347828135 is 5318287438121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1218347828135 is a prime.

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, 704246435 + ... + 704248164.

It is an arithmetic number, because the mean of its divisors is an integer number (183808545300).

Almost surely, 2^{1218347828135} is an apocalyptic number.

1218347828135 is a deficient number, since it is larger than the sum of its proper divisors (252120534265).

1218347828135 is a wasteful number, since it uses less digits than its factorization.

1218347828135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408494777.

The product of its digits is 2580480, while the sum is 53.

The spelling of 1218347828135 in words is "one trillion, two hundred eighteen billion, three hundred forty-seven million, eight hundred twenty-eight thousand, one hundred thirty-five".