18942141330840 has 256 divisors, whose sum is σ = 69946064133120. Its totient is φ = 3996249384960.

The previous prime is 18942141330839. The next prime is 18942141330851. The reversal of 18942141330840 is 4803314124981.

It is a self number, because there is not a number n which added to its sum of digits gives 18942141330840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143499270 + ... + 143631210.

It is an arithmetic number, because the mean of its divisors is an integer number (273226813020).

Almost surely, 2^{18942141330840} is an apocalyptic number.

18942141330840 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 18942141330840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34973032066560).

18942141330840 is an abundant number, since it is smaller than the sum of its proper divisors (51003922802280).

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

18942141330840 is a wasteful number, since it uses less digits than its factorization.

18942141330840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145122 (or 145118 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 18942141330840 in words is "eighteen trillion, nine hundred forty-two billion, one hundred forty-one million, three hundred thirty thousand, eight hundred forty".