189655646 has 8 divisors (see below), whose sum is σ = 284707704. Its totient is φ = 94753080.

The previous prime is 189655637. The next prime is 189655657. The reversal of 189655646 is 646556981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 189655594 and 189655603.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 34145 + ... + 39308.

It is an arithmetic number, because the mean of its divisors is an integer number (35588463).

Almost surely, 2^189655646 is an apocalyptic number.

189655646 is a deficient number, since it is larger than the sum of its proper divisors (95052058).

189655646 is a wasteful number, since it uses less digits than its factorization.

189655646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74746.

The product of its digits is 1555200, while the sum is 50.

The square root of 189655646 is about 13771.5520548702. The cubic root of 189655646 is about 574.5421898455.

The spelling of 189655646 in words is "one hundred eighty-nine million, six hundred fifty-five thousand, six hundred forty-six".