1018318273840 has 160 divisors (see below), whose sum is σ = 2755912896000. Its totient is φ = 342691958784.

The previous prime is 1018318273823. The next prime is 1018318273853. The reversal of 1018318273840 is 483728138101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21749976 + ... + 21796744.

It is an arithmetic number, because the mean of its divisors is an integer number (17224455600).

Almost surely, 2^{1018318273840} is an apocalyptic number.

1018318273840 is a gapful number since it is divisible by the number (10) 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 1018318273840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377956448000).

1018318273840 is an abundant number, since it is smaller than the sum of its proper divisors (1737594622160).

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

1018318273840 is a wasteful number, since it uses less digits than its factorization.

1018318273840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47507 (or 47501 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 1018318273840 in words is "one trillion, eighteen billion, three hundred eighteen million, two hundred seventy-three thousand, eight hundred forty".