1384518378 has 16 divisors (see below), whose sum is σ = 2795921856. Its totient is φ = 457025280.

The previous prime is 1384518361. The next prime is 1384518383. The reversal of 1384518378 is 8738154831.

It is a happy number.

It is a super-2 number, since 2×1384518378² = 3833782278039501768, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 1119543 + ... + 1120778.

It is an arithmetic number, because the mean of its divisors is an integer number (174745116).

Almost surely, 2^1384518378 is an apocalyptic number.

1384518378 is an abundant number, since it is smaller than the sum of its proper divisors (1411403478).

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

1384518378 is a wasteful number, since it uses less digits than its factorization.

1384518378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240429.

The product of its digits is 645120, while the sum is 48.

The square root of 1384518378 is about 37209.1168667035. The cubic root of 1384518378 is about 1114.5500481607.

It can be divided in two parts, 13845 and 18378, that added together give a palindrome (32223).

The spelling of 1384518378 in words is "one billion, three hundred eighty-four million, five hundred eighteen thousand, three hundred seventy-eight".