1318878420 has 48 divisors (see below), whose sum is σ = 3853422720. Its totient is φ = 336409216.

The previous prime is 1318878403. The next prime is 1318878427. The reversal of 1318878420 is 248788131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318878427) 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 15 ways as a sum of consecutive naturals, for example, 476475 + ... + 479234.

It is an arithmetic number, because the mean of its divisors is an integer number (80279640).

Almost surely, 2^1318878420 is an apocalyptic number.

1318878420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318878420 is an abundant number, since it is smaller than the sum of its proper divisors (2534544300).

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

1318878420 is a wasteful number, since it uses less digits than its factorization.

1318878420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955744 (or 955742 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 1318878420 is about 36316.3657322701. The cubic root of 1318878420 is about 1096.6505330890.

The spelling of 1318878420 in words is "one billion, three hundred eighteen million, eight hundred seventy-eight thousand, four hundred twenty".