19786085652 has 12 divisors (see below), whose sum is σ = 46167533216. Its totient is φ = 6595361880.

The previous prime is 19786085633. The next prime is 19786085659. The reversal of 19786085652 is 25658068791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 19786085592 and 19786085601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19786085659) 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, 824420224 + ... + 824420247.

Almost surely, 2^19786085652 is an apocalyptic number.

19786085652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19786085652 is an abundant number, since it is smaller than the sum of its proper divisors (26381447564).

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

19786085652 is a wasteful number, since it uses less digits than its factorization.

19786085652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648840478 (or 1648840476 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 19786085652 in words is "nineteen billion, seven hundred eighty-six million, eighty-five thousand, six hundred fifty-two".