19425194442 has 32 divisors (see below), whose sum is σ = 43758437760. Its totient is φ = 6386364000.

The previous prime is 19425194431. The next prime is 19425194561. The reversal of 19425194442 is 24449152491.

19425194442 is a `hidden beast` number, since 1 + 94 + 2 + 519 + 4 + 4 + 42 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2459934 + ... + 2467817.

It is an arithmetic number, because the mean of its divisors is an integer number (1367451180).

Almost surely, 2^19425194442 is an apocalyptic number.

19425194442 is an abundant number, since it is smaller than the sum of its proper divisors (24333243318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19425194442 is a wasteful number, since it uses less digits than its factorization.

19425194442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4927835 (or 4927829 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 19425194442 in words is "nineteen billion, four hundred twenty-five million, one hundred ninety-four thousand, four hundred forty-two".