19479347452 has 6 divisors (see below), whose sum is σ = 34088858048. Its totient is φ = 9739673724.

The previous prime is 19479347431. The next prime is 19479347453. The reversal of 19479347452 is 25474397491.

It is a junction number, because it is equal to n+sod(n) for n = 19479347393 and 19479347402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19479347453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2434918428 + ... + 2434918435.

Almost surely, 2^19479347452 is an apocalyptic number.

It is an amenable number.

19479347452 is a deficient number, since it is larger than the sum of its proper divisors (14609510596).

19479347452 is a wasteful number, since it uses less digits than its factorization.

19479347452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4869836867 (or 4869836865 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 55.

The spelling of 19479347452 in words is "nineteen billion, four hundred seventy-nine million, three hundred forty-seven thousand, four hundred fifty-two".