381384616 has 8 divisors (see below), whose sum is σ = 715096170. Its totient is φ = 190692304.

The previous prime is 381384581. The next prime is 381384617. The reversal of 381384616 is 616483183.

It is a happy number.

381384616 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 226382116 + 155002500 = 15046^2 + 12450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (381384617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23836531 + ... + 23836546.

Almost surely, 2^381384616 is an apocalyptic number.

It is an amenable number.

381384616 is a deficient number, since it is larger than the sum of its proper divisors (333711554).

381384616 is a wasteful number, since it uses less digits than its factorization.

381384616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47673083 (or 47673079 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 381384616 is about 19529.0710480555. The cubic root of 381384616 is about 725.1943139876.

The spelling of 381384616 in words is "three hundred eighty-one million, three hundred eighty-four thousand, six hundred sixteen".