1878194922240 has 1152 divisors, whose sum is σ = 7600556113920. Its totient is φ = 384706215936.

The previous prime is 1878194922181. The next prime is 1878194922313. The reversal of 1878194922240 is 422294918781.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3591194619 + ... + 3591195141.

It is an arithmetic number, because the mean of its divisors is an integer number (6597704960).

Almost surely, 2^{1878194922240} is an apocalyptic number.

1878194922240 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 1878194922240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3800278056960).

1878194922240 is an abundant number, since it is smaller than the sum of its proper divisors (5722361191680).

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

1878194922240 is a wasteful number, since it uses less digits than its factorization.

1878194922240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 1878194922240 in words is "one trillion, eight hundred seventy-eight billion, one hundred ninety-four million, nine hundred twenty-two thousand, two hundred forty".