19631689348 has 6 divisors (see below), whose sum is σ = 34355456366. Its totient is φ = 9815844672.

The previous prime is 19631689339. The next prime is 19631689361. The reversal of 19631689348 is 84398613691.

It can be written as a sum of positive squares in only one way, i.e., 17373348864 + 2258340484 = 131808^2 + 47522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19631689292 and 19631689301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2453961165 + ... + 2453961172.

Almost surely, 2^19631689348 is an apocalyptic number.

It is an amenable number.

19631689348 is a deficient number, since it is larger than the sum of its proper divisors (14723767018).

19631689348 is a wasteful number, since it uses less digits than its factorization.

19631689348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907922341 (or 4907922339 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The spelling of 19631689348 in words is "nineteen billion, six hundred thirty-one million, six hundred eighty-nine thousand, three hundred forty-eight".