1384378780 has 24 divisors (see below), whose sum is σ = 3000977280. Its totient is φ = 535888320.

The previous prime is 1384378777. The next prime is 1384378781. The reversal of 1384378780 is 878734831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384378781) 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, 1115815 + ... + 1117054.

It is an arithmetic number, because the mean of its divisors is an integer number (125040720).

Almost surely, 2^1384378780 is an apocalyptic number.

1384378780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1384378780 is an abundant number, since it is smaller than the sum of its proper divisors (1616598500).

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

1384378780 is a wasteful number, since it uses less digits than its factorization.

1384378780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232909 (or 2232907 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The square root of 1384378780 is about 37207.2409619418. The cubic root of 1384378780 is about 1114.5125876763.

The spelling of 1384378780 in words is "one billion, three hundred eighty-four million, three hundred seventy-eight thousand, seven hundred eighty".