1378381819500 has 480 divisors, whose sum is σ = 5441762342016. Its totient is φ = 296524800000.

The previous prime is 1378381819481. The next prime is 1378381819523. The reversal of 1378381819500 is 59181838731.

It is a happy number.

1378381819500 is a `hidden beast` number, since 1 + 3 + 78 + 381 + 8 + 195 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 159 ways as a sum of consecutive naturals, for example, 4676500 + ... + 4962500.

Almost surely, 2^{1378381819500} is an apocalyptic number.

1378381819500 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 1378381819500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2720881171008).

1378381819500 is an abundant number, since it is smaller than the sum of its proper divisors (4063380522516).

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

1378381819500 is a wasteful number, since it uses less digits than its factorization.

1378381819500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286056 (or 286035 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 1378381819500 in words is "one trillion, three hundred seventy-eight billion, three hundred eighty-one million, eight hundred nineteen thousand, five hundred".