381183216 has 40 divisors (see below), whose sum is σ = 997198080. Its totient is φ = 125451456.

The previous prime is 381183211. The next prime is 381183233. The reversal of 381183216 is 612381183.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381183211) 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, 46470 + ... + 54053.

It is an arithmetic number, because the mean of its divisors is an integer number (24929952).

Almost surely, 2^381183216 is an apocalyptic number.

It is an amenable number.

381183216 is an abundant number, since it is smaller than the sum of its proper divisors (616014864).

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

381183216 is a wasteful number, since it uses less digits than its factorization.

381183216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100613 (or 100607 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 381183216 is about 19523.9139518694. The cubic root of 381183216 is about 725.0666389797.

The spelling of 381183216 in words is "three hundred eighty-one million, one hundred eighty-three thousand, two hundred sixteen".