1318190000 has 100 divisors (see below), whose sum is σ = 3212702856. Its totient is φ = 523776000.

The previous prime is 1318189987. The next prime is 1318190011. The reversal of 1318190000 is 918131.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×1318190000² = 3475249752200000000, which contains 22 as substring.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1929659 + ... + 1930341.

Almost surely, 2^1318190000 is an apocalyptic number.

1318190000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606351428).

1318190000 is an abundant number, since it is smaller than the sum of its proper divisors (1894512856).

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

1318190000 is an equidigital number, since it uses as much as digits as its factorization.

1318190000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1318190000 is about 36306.8863991392. The cubic root of 1318190000 is about 1096.4596922598.

The spelling of 1318190000 in words is "one billion, three hundred eighteen million, one hundred ninety thousand".