190944865 has 8 divisors (see below), whose sum is σ = 230162688. Its totient is φ = 152070000.

The previous prime is 190944863. The next prime is 190944899. The reversal of 190944865 is 568449091.

It is a happy number.

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

It is not a de Polignac number, because 190944865 - 2¹ = 190944863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190944863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84511 + ... + 86740.

It is an arithmetic number, because the mean of its divisors is an integer number (28770336).

Almost surely, 2^190944865 is an apocalyptic number.

It is an amenable number.

190944865 is a deficient number, since it is larger than the sum of its proper divisors (39217823).

190944865 is a wasteful number, since it uses less digits than its factorization.

190944865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171479.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 190944865 is about 13818.2801028203. The cubic root of 190944865 is about 575.8411030083.

The spelling of 190944865 in words is "one hundred ninety million, nine hundred forty-four thousand, eight hundred sixty-five".