19486925656 has 16 divisors (see below), whose sum is σ = 39859620840. Its totient is φ = 8857693440.

The previous prime is 19486925641. The next prime is 19486925657. The reversal of 19486925656 is 65652968491.

It is a junction number, because it is equal to n+sod(n) for n = 19486925594 and 19486925603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19486925657) 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, 110721081 + ... + 110721256.

Almost surely, 2^19486925656 is an apocalyptic number.

It is an amenable number.

19486925656 is an abundant number, since it is smaller than the sum of its proper divisors (20372695184).

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

19486925656 is a wasteful number, since it uses less digits than its factorization.

19486925656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221442354 (or 221442350 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 61.

The spelling of 19486925656 in words is "nineteen billion, four hundred eighty-six million, nine hundred twenty-five thousand, six hundred fifty-six".