1383161856 has 112 divisors (see below), whose sum is σ = 3850136064. Its totient is φ = 440827904.

The previous prime is 1383161851. The next prime is 1383161893. The reversal of 1383161856 is 6581613831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383161851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564025 + ... + 566471.

Almost surely, 2^1383161856 is an apocalyptic number.

1383161856 is a gapful number since it is divisible by the number (16) 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 1383161856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1925068032).

1383161856 is an abundant number, since it is smaller than the sum of its proper divisors (2466974208).

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

1383161856 is an equidigital number, since it uses as much as digits as its factorization.

1383161856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2475 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 1383161856 is about 37190.8840443461. The cubic root of 1383161856 is about 1114.1859249793.

The spelling of 1383161856 in words is "one billion, three hundred eighty-three million, one hundred sixty-one thousand, eight hundred fifty-six".