19850601173 has 8 divisors (see below), whose sum is σ = 21458857728. Its totient is φ = 18253957104.

The previous prime is 19850601103. The next prime is 19850601187. The reversal of 19850601173 is 37110605891.

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

It is a cyclic number.

It is not a de Polignac number, because 19850601173 - 2²² = 19846406869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19850601173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19850601103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2899565 + ... + 2906402.

It is an arithmetic number, because the mean of its divisors is an integer number (2682357216).

Almost surely, 2^19850601173 is an apocalyptic number.

19850601173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19850601173 is a deficient number, since it is larger than the sum of its proper divisors (1608256555).

19850601173 is a wasteful number, since it uses less digits than its factorization.

19850601173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5806243.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 19850601173 in words is "nineteen billion, eight hundred fifty million, six hundred one thousand, one hundred seventy-three".