19854648963 has 10 divisors (see below), whose sum is σ = 29659414004. Its totient is φ = 13236432588.

The previous prime is 19854648949. The next prime is 19854648973. The reversal of 19854648963 is 36984645891.

19854648963 is a `hidden beast` number, since 1 + 9 + 8 + 546 + 4 + 89 + 6 + 3 = 666.

It is not a de Polignac number, because 19854648963 - 2³² = 15559681667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19854648963.

It is not an unprimeable number, because it can be changed into a prime (19854648923) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 122559481 + ... + 122559642.

Almost surely, 2^19854648963 is an apocalyptic number.

19854648963 is a deficient number, since it is larger than the sum of its proper divisors (9804765041).

19854648963 is an equidigital number, since it uses as much as digits as its factorization.

19854648963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245119135 (or 245119126 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 19854648963 in words is "nineteen billion, eight hundred fifty-four million, six hundred forty-eight thousand, nine hundred sixty-three".