1203181838140 has 96 divisors (see below), whose sum is σ = 2600662546944. Its totient is φ = 467320224000.

The previous prime is 1203181838087. The next prime is 1203181838141. The reversal of 1203181838140 is 418381813021.

It is a junction number, because it is equal to n+sod(n) for n = 1203181838093 and 1203181838102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203181838141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120229017 + ... + 120239023.

It is an arithmetic number, because the mean of its divisors is an integer number (27090234864).

Almost surely, 2^{1203181838140} is an apocalyptic number.

1203181838140 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 1203181838140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300331273472).

1203181838140 is an abundant number, since it is smaller than the sum of its proper divisors (1397480708804).

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

1203181838140 is a wasteful number, since it uses less digits than its factorization.

1203181838140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10867 (or 10865 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The spelling of 1203181838140 in words is "one trillion, two hundred three billion, one hundred eighty-one million, eight hundred thirty-eight thousand, one hundred forty".