1318198880 has 24 divisors (see below), whose sum is σ = 3114245232. Its totient is φ = 527279488.

The previous prime is 1318198877. The next prime is 1318198919. The reversal of 1318198880 is 888918131.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 4119212 + ... + 4119531.

It is an arithmetic number, because the mean of its divisors is an integer number (129760218).

Almost surely, 2^1318198880 is an apocalyptic number.

1318198880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318198880 is an abundant number, since it is smaller than the sum of its proper divisors (1796046352).

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

1318198880 is an equidigital number, since it uses as much as digits as its factorization.

1318198880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8238758 (or 8238750 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 47.

The square root of 1318198880 is about 36307.0086897833. The cubic root of 1318198880 is about 1096.4621543581.

The spelling of 1318198880 in words is "one billion, three hundred eighteen million, one hundred ninety-eight thousand, eight hundred eighty".