189835673 has 2 divisors, whose sum is σ = 189835674. Its totient is φ = 189835672.

The previous prime is 189835619. The next prime is 189835687. The reversal of 189835673 is 376538981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187361344 + 2474329 = 13688^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 189835673 - 2⁶ = 189835609 is a prime.

It is a super-5 number, since 5×189835673⁵ (a number of 43 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (189835603) 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 as a sum of consecutive naturals, namely, 94917836 + 94917837.

It is an arithmetic number, because the mean of its divisors is an integer number (94917837).

Almost surely, 2^189835673 is an apocalyptic number.

It is an amenable number.

189835673 is a deficient number, since it is larger than the sum of its proper divisors (1).

189835673 is an equidigital number, since it uses as much as digits as its factorization.

189835673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 189835673 is about 13778.0866959096. The cubic root of 189835673 is about 574.7239234223.

The spelling of 189835673 in words is "one hundred eighty-nine million, eight hundred thirty-five thousand, six hundred seventy-three".