19634663532 has 24 divisors (see below), whose sum is σ = 49979143872. Its totient is φ = 5949898000.

The previous prime is 19634663491. The next prime is 19634663551. The reversal of 19634663532 is 23536643691.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 74373594 + ... + 74373857.

It is an arithmetic number, because the mean of its divisors is an integer number (2082464328).

Almost surely, 2^19634663532 is an apocalyptic number.

19634663532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19634663532 is an abundant number, since it is smaller than the sum of its proper divisors (30344480340).

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

19634663532 is a wasteful number, since it uses less digits than its factorization.

19634663532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148747469 (or 148747467 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 48.

The spelling of 19634663532 in words is "nineteen billion, six hundred thirty-four million, six hundred sixty-three thousand, five hundred thirty-two".