189592661 has 2 divisors, whose sum is σ = 189592662. Its totient is φ = 189592660.

The previous prime is 189592631. The next prime is 189592717. The reversal of 189592661 is 166295981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151536100 + 38056561 = 12310^2 + 6169^2 .

It is a cyclic number.

It is not a de Polignac number, because 189592661 - 2¹⁰ = 189591637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189592631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94796330 + 94796331.

It is an arithmetic number, because the mean of its divisors is an integer number (94796331).

Almost surely, 2^189592661 is an apocalyptic number.

It is an amenable number.

189592661 is a deficient number, since it is larger than the sum of its proper divisors (1).

189592661 is an equidigital number, since it uses as much as digits as its factorization.

189592661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 47.

The square root of 189592661 is about 13769.2650856899. The cubic root of 189592661 is about 574.4785806195.

The spelling of 189592661 in words is "one hundred eighty-nine million, five hundred ninety-two thousand, six hundred sixty-one".