1375836840 has 384 divisors, whose sum is σ = 5391509760. Its totient is φ = 309049344.

The previous prime is 1375836773. The next prime is 1375836857. The reversal of 1375836840 is 486385731.

1375836840 is a `hidden beast` number, since 1 + 3 + 7 + 583 + 68 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4966782 + ... + 4967058.

It is an arithmetic number, because the mean of its divisors is an integer number (14040390).

Almost surely, 2^1375836840 is an apocalyptic number.

1375836840 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 1375836840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2695754880).

1375836840 is an abundant number, since it is smaller than the sum of its proper divisors (4015672920).

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

1375836840 is a wasteful number, since it uses less digits than its factorization.

1375836840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1375836840 is about 37092.2746673751. The cubic root of 1375836840 is about 1112.2155892921.

The spelling of 1375836840 in words is "one billion, three hundred seventy-five million, eight hundred thirty-six thousand, eight hundred forty".