1218504748038 has 24 divisors (see below), whose sum is σ = 2547573260568. Its totient is φ = 388508759232.

The previous prime is 1218504748033. The next prime is 1218504748049. The reversal of 1218504748038 is 8308474058121.

It is a happy number.

It is a super-2 number, since 2×1218504748038² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218504748033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191947795 + ... + 191954142.

It is an arithmetic number, because the mean of its divisors is an integer number (106148885857).

Almost surely, 2^{1218504748038} is an apocalyptic number.

1218504748038 is an abundant number, since it is smaller than the sum of its proper divisors (1329068512530).

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

1218504748038 is a wasteful number, since it uses less digits than its factorization.

1218504748038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383901988 (or 383901965 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 1218504748038 in words is "one trillion, two hundred eighteen billion, five hundred four million, seven hundred forty-eight thousand, thirty-eight".