19963774532 has 48 divisors (see below), whose sum is σ = 38171257152. Its totient is φ = 9080588160.

The previous prime is 19963774513. The next prime is 19963774583. The reversal of 19963774532 is 23547736991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1811543 + ... + 1822529.

It is an arithmetic number, because the mean of its divisors is an integer number (795234524).

Almost surely, 2^19963774532 is an apocalyptic number.

It is an amenable number.

19963774532 is a deficient number, since it is larger than the sum of its proper divisors (18207482620).

19963774532 is a wasteful number, since it uses less digits than its factorization.

19963774532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11508 (or 11506 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 56.

The spelling of 19963774532 in words is "nineteen billion, nine hundred sixty-three million, seven hundred seventy-four thousand, five hundred thirty-two".