8381384055 has 48 divisors (see below), whose sum is σ = 15856663680. Its totient is φ = 4061592000.

The previous prime is 8381384003. The next prime is 8381384059. The reversal of 8381384055 is 5504831838.

It is not a de Polignac number, because 8381384055 - 2¹⁷ = 8381252983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8381384055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8381384059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1408276 + ... + 1414214.

It is an arithmetic number, because the mean of its divisors is an integer number (330347160).

Almost surely, 2^8381384055 is an apocalyptic number.

8381384055 is a deficient number, since it is larger than the sum of its proper divisors (7475279625).

8381384055 is a wasteful number, since it uses less digits than its factorization.

8381384055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8812 (or 8809 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 8381384055 is about 91549.8992626426. The cubic root of 8381384055 is about 2031.2899220809.

The spelling of 8381384055 in words is "eight billion, three hundred eighty-one million, three hundred eighty-four thousand, fifty-five".