189589855 has 32 divisors (see below), whose sum is σ = 281232000. Its totient is φ = 119480832.

The previous prime is 189589843. The next prime is 189589859. The reversal of 189589855 is 558985981.

It is a cyclic number.

It is not a de Polignac number, because 189589855 - 2⁷ = 189589727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189589855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189589859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121621 + ... + 123169.

It is an arithmetic number, because the mean of its divisors is an integer number (8788500).

Almost surely, 2^189589855 is an apocalyptic number.

189589855 is a deficient number, since it is larger than the sum of its proper divisors (91642145).

189589855 is a wasteful number, since it uses less digits than its factorization.

189589855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843.

The product of its digits is 5184000, while the sum is 58.

The square root of 189589855 is about 13769.1631917121. The cubic root of 189589855 is about 574.4757464822.

The spelling of 189589855 in words is "one hundred eighty-nine million, five hundred eighty-nine thousand, eight hundred fifty-five".