19429265644 has 12 divisors (see below), whose sum is σ = 34229412000. Its totient is φ = 9649433648.

The previous prime is 19429265627. The next prime is 19429265729. The reversal of 19429265644 is 44656292491.

It is a junction number, because it is equal to n+sod(n) for n = 19429265591 and 19429265600.

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 in 3 ways as a sum of consecutive naturals, for example, 16299124 + ... + 16300315.

It is an arithmetic number, because the mean of its divisors is an integer number (2852451000).

Almost surely, 2^19429265644 is an apocalyptic number.

It is an amenable number.

19429265644 is a deficient number, since it is larger than the sum of its proper divisors (14800146356).

19429265644 is a wasteful number, since it uses less digits than its factorization.

19429265644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32599592 (or 32599590 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The spelling of 19429265644 in words is "nineteen billion, four hundred twenty-nine million, two hundred sixty-five thousand, six hundred forty-four".