190444609 has 2 divisors, whose sum is σ = 190444610. Its totient is φ = 190444608.

The previous prime is 190444571. The next prime is 190444613. The reversal of 190444609 is 906444091.

190444609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189145009 + 1299600 = 13753^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 190444609 - 2¹¹ = 190442561 is a prime.

It is not a weakly prime, because it can be changed into another prime (190441609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95222304 + 95222305.

It is an arithmetic number, because the mean of its divisors is an integer number (95222305).

Almost surely, 2^190444609 is an apocalyptic number.

It is an amenable number.

190444609 is a deficient number, since it is larger than the sum of its proper divisors (1).

190444609 is an equidigital number, since it uses as much as digits as its factorization.

190444609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 190444609 is about 13800.1669917433. The cubic root of 190444609 is about 575.3377816208.

It can be divided in two parts, 19044 and 4609, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 190444609 in words is "one hundred ninety million, four hundred forty-four thousand, six hundred nine".