189589693 has 2 divisors, whose sum is σ = 189589694. Its totient is φ = 189589692.

The previous prime is 189589691. The next prime is 189589721. The reversal of 189589693 is 396985981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163149529 + 26440164 = 12773^2 + 5142^2 .

It is a cyclic number.

It is not a de Polignac number, because 189589693 - 2¹ = 189589691 is a prime.

Together with 189589691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189589691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94794846 + 94794847.

It is an arithmetic number, because the mean of its divisors is an integer number (94794847).

Almost surely, 2^189589693 is an apocalyptic number.

It is an amenable number.

189589693 is a deficient number, since it is larger than the sum of its proper divisors (1).

189589693 is an equidigital number, since it uses as much as digits as its factorization.

189589693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 58.

The square root of 189589693 is about 13769.1573090004. The cubic root of 189589693 is about 574.4755828569.

The spelling of 189589693 in words is "one hundred eighty-nine million, five hundred eighty-nine thousand, six hundred ninety-three".