1218301539740 has 48 divisors (see below), whose sum is σ = 2572345248480. Its totient is φ = 484675249920.

The previous prime is 1218301539731. The next prime is 1218301539743. The reversal of 1218301539740 is 479351038121.

It is a junction number, because it is equal to n+sod(n) for n = 1218301539691 and 1218301539700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218301539743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4168439 + ... + 4451121.

It is an arithmetic number, because the mean of its divisors is an integer number (53590526010).

Almost surely, 2^{1218301539740} is an apocalyptic number.

1218301539740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1218301539740 is an abundant number, since it is smaller than the sum of its proper divisors (1354043708740).

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

1218301539740 is a wasteful number, since it uses less digits than its factorization.

1218301539740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283862 (or 283860 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 1218301539740 in words is "one trillion, two hundred eighteen billion, three hundred one million, five hundred thirty-nine thousand, seven hundred forty".