19420020174 has 8 divisors (see below), whose sum is σ = 38840040360. Its totient is φ = 6473340056.

The previous prime is 19420020173. The next prime is 19420020187. The reversal of 19420020174 is 47102002491.

It is a sphenic number, since it is the product of 3 distinct primes.

19420020174 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19420020173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618335009 + ... + 1618335020.

It is an arithmetic number, because the mean of its divisors is an integer number (4855005045).

Almost surely, 2^19420020174 is an apocalyptic number.

19420020174 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19420020174 is a wasteful number, since it uses less digits than its factorization.

19420020174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236670034.

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 19420020174 in words is "nineteen billion, four hundred twenty million, twenty thousand, one hundred seventy-four".