1878424304640 has 352 divisors, whose sum is σ = 6482178239040. Its totient is φ = 461523910656.

The previous prime is 1878424304633. The next prime is 1878424304677. The reversal of 1878424304640 is 464034248781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111213316 + ... + 111230204.

Almost surely, 2^{1878424304640} is an apocalyptic number.

1878424304640 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 1878424304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3241089119520).

1878424304640 is an abundant number, since it is smaller than the sum of its proper divisors (4603753934400).

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

1878424304640 is a wasteful number, since it uses less digits than its factorization.

1878424304640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487 (or 17469 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 51.

The spelling of 1878424304640 in words is "one trillion, eight hundred seventy-eight billion, four hundred twenty-four million, three hundred four thousand, six hundred forty".