199328840493 has 8 divisors (see below), whose sum is σ = 267464601888. Its totient is φ = 132039486384.

The previous prime is 199328840471. The next prime is 199328840509. The reversal of 199328840493 is 394048823991.

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

It is not a de Polignac number, because 199328840493 - 2¹² = 199328836397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199328840443) 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, 211601271 + ... + 211602212.

It is an arithmetic number, because the mean of its divisors is an integer number (33433075236).

Almost surely, 2^199328840493 is an apocalyptic number.

It is an amenable number.

199328840493 is a deficient number, since it is larger than the sum of its proper divisors (68135761395).

199328840493 is a wasteful number, since it uses less digits than its factorization.

199328840493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423203643.

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 199328840493 in words is "one hundred ninety-nine billion, three hundred twenty-eight million, eight hundred forty thousand, four hundred ninety-three".