190563823 has 2 divisors, whose sum is σ = 190563824. Its totient is φ = 190563822.

The previous prime is 190563811. The next prime is 190563839. The reversal of 190563823 is 328365091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190563823 - 2⁹ = 190563311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190563323) 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 as a sum of consecutive naturals, namely, 95281911 + 95281912.

It is an arithmetic number, because the mean of its divisors is an integer number (95281912).

Almost surely, 2^190563823 is an apocalyptic number.

190563823 is a deficient number, since it is larger than the sum of its proper divisors (1).

190563823 is an equidigital number, since it uses as much as digits as its factorization.

190563823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 190563823 is about 13804.4856115684. The cubic root of 190563823 is about 575.4578060416.

The spelling of 190563823 in words is "one hundred ninety million, five hundred sixty-three thousand, eight hundred twenty-three".