189057 has 16 divisors (see below), whose sum is σ = 292032. Its totient is φ = 107520.

The previous prime is 189043. The next prime is 189061. The reversal of 189057 is 750981.

189057 = T₈₈ + T₈₉ + ... + T₁₂₁.

It is not a de Polignac number, because 189057 - 2⁴ = 189041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393 + ... + 729.

It is an arithmetic number, because the mean of its divisors is an integer number (18252).

2¹⁸⁹⁰⁵⁷ is an apocalyptic number.

189057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

189057 is a deficient number, since it is larger than the sum of its proper divisors (102975).

189057 is a wasteful number, since it uses less digits than its factorization.

189057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 189057 is about 434.8068536718. The cubic root of 189057 is about 57.3937040608.

The spelling of 189057 in words is "one hundred eighty-nine thousand, fifty-seven".