189206057 has 4 divisors (see below), whose sum is σ = 192030096. Its totient is φ = 186382020.

The previous prime is 189206041. The next prime is 189206071. The reversal of 189206057 is 750602981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189206057 - 2⁴ = 189206041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189206057.

It is not an unprimeable number, because it can be changed into a prime (189200057) 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 3 ways as a sum of consecutive naturals, for example, 1411919 + ... + 1412052.

It is an arithmetic number, because the mean of its divisors is an integer number (48007524).

Almost surely, 2^189206057 is an apocalyptic number.

It is an amenable number.

189206057 is a deficient number, since it is larger than the sum of its proper divisors (2824039).

189206057 is an equidigital number, since it uses as much as digits as its factorization.

189206057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824038.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 189206057 is about 13755.2192639739. The cubic root of 189206057 is about 574.0878361537.

The spelling of 189206057 in words is "one hundred eighty-nine million, two hundred six thousand, fifty-seven".