4381781432 has 32 divisors (see below), whose sum is σ = 9463480320. Its totient is φ = 1863116640.

The previous prime is 4381781431. The next prime is 4381781473. The reversal of 4381781432 is 2341871834.

It is a self number, because there is not a number n which added to its sum of digits gives 4381781432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381781431) 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, 300944 + ... + 315167.

It is an arithmetic number, because the mean of its divisors is an integer number (295733760).

Almost surely, 2^4381781432 is an apocalyptic number.

It is an amenable number.

4381781432 is an abundant number, since it is smaller than the sum of its proper divisors (5081698888).

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

4381781432 is a wasteful number, since it uses less digits than its factorization.

4381781432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616251 (or 616247 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 4381781432 is about 66195.0257345671. The cubic root of 4381781432 is about 1636.3777669928.

The spelling of 4381781432 in words is "four billion, three hundred eighty-one million, seven hundred eighty-one thousand, four hundred thirty-two".