1378840180 has 12 divisors (see below), whose sum is σ = 2895564420. Its totient is φ = 551536064.

The previous prime is 1378840163. The next prime is 1378840181. The reversal of 1378840180 is 810488731.

It can be written as a sum of positive squares in 2 ways, for example, as 488056464 + 890783716 = 22092^2 + 29846^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378840181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34470985 + ... + 34471024.

It is an arithmetic number, because the mean of its divisors is an integer number (241297035).

Almost surely, 2^1378840180 is an apocalyptic number.

1378840180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378840180 is an abundant number, since it is smaller than the sum of its proper divisors (1516724240).

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

1378840180 is a wasteful number, since it uses less digits than its factorization.

1378840180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68942018 (or 68942016 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 1378840180 is about 37132.7373082029. The cubic root of 1378840180 is about 1113.0242932108.

The spelling of 1378840180 in words is "one billion, three hundred seventy-eight million, eight hundred forty thousand, one hundred eighty".