189584656 has 20 divisors (see below), whose sum is σ = 376280604. Its totient is φ = 92480000.

The previous prime is 189584639. The next prime is 189584671. The reversal of 189584656 is 656485981.

It can be written as a sum of positive squares in 2 ways, for example, as 45968400 + 143616256 = 6780^2 + 11984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143845 + ... + 145156.

Almost surely, 2^189584656 is an apocalyptic number.

189584656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189584656 is a deficient number, since it is larger than the sum of its proper divisors (186695948).

189584656 is a wasteful number, since it uses less digits than its factorization.

189584656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289050 (or 289044 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The square root of 189584656 is about 13768.9743989885. The cubic root of 189584656 is about 574.4704952753.

It can be divided in two parts, 189584 and 656, that multiplied together give a square (124367104 = 11152²).

The spelling of 189584656 in words is "one hundred eighty-nine million, five hundred eighty-four thousand, six hundred fifty-six".