19358188040 has 16 divisors (see below), whose sum is σ = 43555923180. Its totient is φ = 7743275200.

The previous prime is 19358188039. The next prime is 19358188079. The reversal of 19358188040 is 4088185391.

It can be written as a sum of positive squares in 2 ways, for example, as 17467851556 + 1890336484 = 132166^2 + 43478^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241977311 + ... + 241977390.

Almost surely, 2^19358188040 is an apocalyptic number.

19358188040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19358188040 is an abundant number, since it is smaller than the sum of its proper divisors (24197735140).

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

19358188040 is a wasteful number, since it uses less digits than its factorization.

19358188040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483954712 (or 483954708 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 47.

The spelling of 19358188040 in words is "nineteen billion, three hundred fifty-eight million, one hundred eighty-eight thousand, forty".