189487065 has 16 divisors (see below), whose sum is σ = 303378048. Its totient is φ = 100993536.

The previous prime is 189487043. The next prime is 189487069. The reversal of 189487065 is 560784981.

It is not a de Polignac number, because 189487065 - 2⁸ = 189486809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189487069) 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 15 ways as a sum of consecutive naturals, for example, 27124 + ... + 33386.

It is an arithmetic number, because the mean of its divisors is an integer number (18961128).

Almost surely, 2^189487065 is an apocalyptic number.

189487065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189487065 is a deficient number, since it is larger than the sum of its proper divisors (113890983).

189487065 is a wasteful number, since it uses less digits than its factorization.

189487065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 189487065 is about 13765.4300695619. The cubic root of 189487065 is about 574.3719064728.

The spelling of 189487065 in words is "one hundred eighty-nine million, four hundred eighty-seven thousand, sixty-five".