19745537682 has 16 divisors (see below), whose sum is σ = 42528850560. Its totient is φ = 6075550032.

The previous prime is 19745537677. The next prime is 19745537683. The reversal of 19745537682 is 28673554791.

It is not an unprimeable number, because it can be changed into a prime (19745537683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126573882 + ... + 126574037.

It is an arithmetic number, because the mean of its divisors is an integer number (2658053160).

Almost surely, 2^19745537682 is an apocalyptic number.

19745537682 is an abundant number, since it is smaller than the sum of its proper divisors (22783312878).

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

19745537682 is a wasteful number, since it uses less digits than its factorization.

19745537682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253147937.

The product of its digits is 12700800, while the sum is 57.

The spelling of 19745537682 in words is "nineteen billion, seven hundred forty-five million, five hundred thirty-seven thousand, six hundred eighty-two".