19825486764 has 24 divisors (see below), whose sum is σ = 47132290800. Its totient is φ = 6483806784.

The previous prime is 19825486763. The next prime is 19825486789. The reversal of 19825486764 is 46768452891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19825486698 and 19825486707.

It is not an unprimeable number, because it can be changed into a prime (19825486763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15585439 + ... + 15586710.

It is an arithmetic number, because the mean of its divisors is an integer number (1963845450).

Almost surely, 2^19825486764 is an apocalyptic number.

It is an amenable number.

19825486764 is an abundant number, since it is smaller than the sum of its proper divisors (27306804036).

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

19825486764 is a wasteful number, since it uses less digits than its factorization.

19825486764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31172209 (or 31172207 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 60.

The spelling of 19825486764 in words is "nineteen billion, eight hundred twenty-five million, four hundred eighty-six thousand, seven hundred sixty-four".