190144823 has 4 divisors (see below), whose sum is σ = 207430728. Its totient is φ = 172858920.

The previous prime is 190144817. The next prime is 190144853. The reversal of 190144823 is 328441091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190144823 - 2⁴ = 190144807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190144823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190144853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8642936 + ... + 8642957.

It is an arithmetic number, because the mean of its divisors is an integer number (51857682).

Almost surely, 2^190144823 is an apocalyptic number.

190144823 is a deficient number, since it is larger than the sum of its proper divisors (17285905).

190144823 is a wasteful number, since it uses less digits than its factorization.

190144823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285904.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 190144823 is about 13789.3010337725. The cubic root of 190144823 is about 575.0357361532.

The spelling of 190144823 in words is "one hundred ninety million, one hundred forty-four thousand, eight hundred twenty-three".