1218536314434 has 48 divisors (see below), whose sum is σ = 2755465128000. Its totient is φ = 388446414048.

The previous prime is 1218536314423. The next prime is 1218536314441. The reversal of 1218536314434 is 4344136358121.

1218536314434 is a `hidden beast` number, since 1 + 2 + 1 + 8 + 5 + 3 + 631 + 4 + 4 + 3 + 4 = 666.

It is a super-2 number, since 2×1218536314434² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1218536314434.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1971892 + ... + 2515040.

It is an arithmetic number, because the mean of its divisors is an integer number (57405523500).

Almost surely, 2^{1218536314434} is an apocalyptic number.

1218536314434 is an abundant number, since it is smaller than the sum of its proper divisors (1536928813566).

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

1218536314434 is a wasteful number, since it uses less digits than its factorization.

1218536314434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548599 (or 548596 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 1218536314434 in words is "one trillion, two hundred eighteen billion, five hundred thirty-six million, three hundred fourteen thousand, four hundred thirty-four".