190284561 has 6 divisors (see below), whose sum is σ = 274855490. Its totient is φ = 126856368.

The previous prime is 190284539. The next prime is 190284571. The reversal of 190284561 is 165482091.

190284561 is a `hidden beast` number, since 1 + 90 + 2 + 8 + 4 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 188210961 + 2073600 = 13719^2 + 1440^2 .

It is not a de Polignac number, because 190284561 - 2¹³ = 190276369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190284511) 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 5 ways as a sum of consecutive naturals, for example, 10571356 + ... + 10571373.

Almost surely, 2^190284561 is an apocalyptic number.

It is an amenable number.

190284561 is a deficient number, since it is larger than the sum of its proper divisors (84570929).

190284561 is a wasteful number, since it uses less digits than its factorization.

190284561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21142735 (or 21142732 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 190284561 is about 13794.3670025123. The cubic root of 190284561 is about 575.1765668216.

The spelling of 190284561 in words is "one hundred ninety million, two hundred eighty-four thousand, five hundred sixty-one".