1318785518204 has 192 divisors, whose sum is σ = 3118523950080. Its totient is φ = 472469760000.

The previous prime is 1318785518203. The next prime is 1318785518209. The reversal of 1318785518204 is 4028155878131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318785518203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47252654 + ... + 47280554.

It is an arithmetic number, because the mean of its divisors is an integer number (16242312240).

Almost surely, 2^{1318785518204} is an apocalyptic number.

1318785518204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318785518204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559261975040).

1318785518204 is an abundant number, since it is smaller than the sum of its proper divisors (1799738431876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318785518204 is a wasteful number, since it uses less digits than its factorization.

1318785518204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28180 (or 28178 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 1318785518204 in words is "one trillion, three hundred eighteen billion, seven hundred eighty-five million, five hundred eighteen thousand, two hundred four".