19742679148 has 6 divisors (see below), whose sum is σ = 34549688516. Its totient is φ = 9871339572.

The previous prime is 19742679133. The next prime is 19742679169. The reversal of 19742679148 is 84197624791.

It is a junction number, because it is equal to n+sod(n) for n = 19742679092 and 19742679101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2467834890 + ... + 2467834897.

Almost surely, 2^19742679148 is an apocalyptic number.

It is an amenable number.

19742679148 is a deficient number, since it is larger than the sum of its proper divisors (14807009368).

19742679148 is a wasteful number, since it uses less digits than its factorization.

19742679148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935669791 (or 4935669789 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 58.

The spelling of 19742679148 in words is "nineteen billion, seven hundred forty-two million, six hundred seventy-nine thousand, one hundred forty-eight".