19690459948 has 6 divisors (see below), whose sum is σ = 34458304916. Its totient is φ = 9845229972.

The previous prime is 19690459913. The next prime is 19690459969. The reversal of 19690459948 is 84995409691.

It is a self number, because there is not a number n which added to its sum of digits gives 19690459948.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2461307490 + ... + 2461307497.

Almost surely, 2^19690459948 is an apocalyptic number.

It is an amenable number.

19690459948 is a deficient number, since it is larger than the sum of its proper divisors (14767844968).

19690459948 is a wasteful number, since it uses less digits than its factorization.

19690459948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4922614991 (or 4922614989 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 64.

The spelling of 19690459948 in words is "nineteen billion, six hundred ninety million, four hundred fifty-nine thousand, nine hundred forty-eight".