384147778 has 16 divisors (see below), whose sum is σ = 674601984. Its totient is φ = 160619040.

The previous prime is 384147773. The next prime is 384147791. The reversal of 384147778 is 877741483.

It is not an unprimeable number, because it can be changed into a prime (384147773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334050 + ... + 335197.

It is an arithmetic number, because the mean of its divisors is an integer number (42162624).

Almost surely, 2^384147778 is an apocalyptic number.

384147778 is a deficient number, since it is larger than the sum of its proper divisors (290454206).

384147778 is a wasteful number, since it uses less digits than its factorization.

384147778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669297.

The product of its digits is 1053696, while the sum is 49.

The square root of 384147778 is about 19599.6882118058. The cubic root of 384147778 is about 726.9414649132.

The spelling of 384147778 in words is "three hundred eighty-four million, one hundred forty-seven thousand, seven hundred seventy-eight".