190665440164 has 6 divisors (see below), whose sum is σ = 333664520294. Its totient is φ = 95332720080.

The previous prime is 190665440153. The next prime is 190665440167. The reversal of 190665440164 is 461044566091.

190665440164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 184506329764 + 6159110400 = 429542^2 + 78480^2 .

It is not an unprimeable number, because it can be changed into a prime (190665440167) 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, 23833180017 + ... + 23833180024.

Almost surely, 2^190665440164 is an apocalyptic number.

It is an amenable number.

190665440164 is a deficient number, since it is larger than the sum of its proper divisors (142999080130).

190665440164 is a wasteful number, since it uses less digits than its factorization.

190665440164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47666360045 (or 47666360043 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 190665440164 in words is "one hundred ninety billion, six hundred sixty-five million, four hundred forty thousand, one hundred sixty-four".