19746582436 has 12 divisors (see below), whose sum is σ = 39493164928. Its totient is φ = 8462821032.

The previous prime is 19746582413. The next prime is 19746582439. The reversal of 19746582436 is 63428564791.

19746582436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (19746582439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352617516 + ... + 352617571.

Almost surely, 2^19746582436 is an apocalyptic number.

It is an amenable number.

19746582436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19746582436 is a wasteful number, since it uses less digits than its factorization.

19746582436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705235098 (or 705235096 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 19746582436 in words is "nineteen billion, seven hundred forty-six million, five hundred eighty-two thousand, four hundred thirty-six".