19746064828 has 24 divisors (see below), whose sum is σ = 39495623552. Its totient is φ = 8461850544.

The previous prime is 19746064777. The next prime is 19746064829. The reversal of 19746064828 is 82846064791.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19746064829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 391375 + ... + 438937.

Almost surely, 2^19746064828 is an apocalyptic number.

It is an amenable number.

19746064828 is an abundant number, since it is smaller than the sum of its proper divisors (19749558724).

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

19746064828 is a wasteful number, since it uses less digits than its factorization.

19746064828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62401 (or 62399 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 19746064828 in words is "nineteen billion, seven hundred forty-six million, sixty-four thousand, eight hundred twenty-eight".