1938318000 has 80 divisors (see below), whose sum is σ = 6249156576. Its totient is φ = 516883200.

The previous prime is 1938317989. The next prime is 1938318013. The reversal of 1938318000 is 8138391.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 155527 + ... + 167526.

Almost surely, 2^1938318000 is an apocalyptic number.

1938318000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1938318000 is an abundant number, since it is smaller than the sum of its proper divisors (4310838576).

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

1938318000 is a wasteful number, since it uses less digits than its factorization.

1938318000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323079 (or 323063 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1938318000 is about 44026.3330292224. Note that the first 3 decimals coincide. The cubic root of 1938318000 is about 1246.8331569931.

The spelling of 1938318000 in words is "one billion, nine hundred thirty-eight million, three hundred eighteen thousand".