1375843656 has 128 divisors (see below), whose sum is σ = 4017600000. Its totient is φ = 388200960.

The previous prime is 1375843649. The next prime is 1375843669. The reversal of 1375843656 is 6563485731.

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 31 ways as a sum of consecutive naturals, for example, 293620 + ... + 298268.

It is an arithmetic number, because the mean of its divisors is an integer number (31387500).

Almost surely, 2^1375843656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375843656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008800000).

1375843656 is an abundant number, since it is smaller than the sum of its proper divisors (2641756344).

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

1375843656 is a wasteful number, since it uses less digits than its factorization.

1375843656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747 (or 4743 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The square root of 1375843656 is about 37092.3665462316. The cubic root of 1375843656 is about 1112.2174259559.

The spelling of 1375843656 in words is "one billion, three hundred seventy-five million, eight hundred forty-three thousand, six hundred fifty-six".