1218446530136 has 128 divisors (see below), whose sum is σ = 2669750496000. Its totient is φ = 515442009600.

The previous prime is 1218446530129. The next prime is 1218446530163. The reversal of 1218446530136 is 6310356448121.

It is a super-2 number, since 2×1218446530136² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183580610 + ... + 183587246.

It is an arithmetic number, because the mean of its divisors is an integer number (20857425750).

Almost surely, 2^{1218446530136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218446530136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334875248000).

1218446530136 is an abundant number, since it is smaller than the sum of its proper divisors (1451303965864).

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

1218446530136 is a wasteful number, since it uses less digits than its factorization.

1218446530136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8593 (or 8589 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 1218446530136 in words is "one trillion, two hundred eighteen billion, four hundred forty-six million, five hundred thirty thousand, one hundred thirty-six".