19380391300 has 18 divisors (see below), whose sum is σ = 42055449338. Its totient is φ = 7752156480.

The previous prime is 19380391273. The next prime is 19380391301. The reversal of 19380391300 is 319308391.

It can be written as a sum of positive squares in 3 ways, for example, as 5718989376 + 13661401924 = 75624^2 + 116882^2 .

It is a super-2 number, since 2×19380391300² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19380391300.

It is not an unprimeable number, because it can be changed into a prime (19380391301) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 96901857 + ... + 96902056.

Almost surely, 2^19380391300 is an apocalyptic number.

19380391300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19380391300 is an abundant number, since it is smaller than the sum of its proper divisors (22675058038).

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

19380391300 is a wasteful number, since it uses less digits than its factorization.

19380391300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193803927 (or 193803920 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

Adding to 19380391300 its reverse (319308391), we get a palindrome (19699699691).

The spelling of 19380391300 in words is "nineteen billion, three hundred eighty million, three hundred ninety-one thousand, three hundred".