19025788356 has 135 divisors (see below), whose sum is σ = 50899403709. Its totient is φ = 6197098752.

The previous prime is 19025788349. The next prime is 19025788361. The reversal of 19025788356 is 65388752091.

The square root of 19025788356 is 137934.

It is a perfect power (a square), and thus also a powerful number.

19025788356 is a `hidden beast` number, since 19 + 0 + 2 + 578 + 8 + 3 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8543304900 + 10482483456 = 92430^2 + 102384^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

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 44 ways as a sum of consecutive naturals, for example, 196142100 + ... + 196142196.

Almost surely, 2^19025788356 is an apocalyptic number.

19025788356 is the 137934-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19025788356

19025788356 is an abundant number, since it is smaller than the sum of its proper divisors (31873615353).

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

19025788356 is an frugal number, since it uses more digits than its factorization.

19025788356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 19025788356 in words is "nineteen billion, twenty-five million, seven hundred eighty-eight thousand, three hundred fifty-six".