190838398563 has 12 divisors (see below), whose sum is σ = 284547576768. Its totient is φ = 123121547280.

The previous prime is 190838398559. The next prime is 190838398589. The reversal of 190838398563 is 365893838091.

190838398563 is a `hidden beast` number, since 1 + 9 + 0 + 8 + 38 + 39 + 8 + 563 = 666.

It is not a de Polignac number, because 190838398563 - 2² = 190838398559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190838398563.

It is not an unprimeable number, because it can be changed into a prime (190838398763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342004020 + ... + 342004577.

It is an arithmetic number, because the mean of its divisors is an integer number (23712298064).

Almost surely, 2^190838398563 is an apocalyptic number.

190838398563 is a deficient number, since it is larger than the sum of its proper divisors (93709178205).

190838398563 is a wasteful number, since it uses less digits than its factorization.

190838398563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684008634 (or 684008631 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 190838398563 in words is "one hundred ninety billion, eight hundred thirty-eight million, three hundred ninety-eight thousand, five hundred sixty-three".