189731466 has 12 divisors (see below), whose sum is σ = 411084882. Its totient is φ = 63243816.

The previous prime is 189731431. The next prime is 189731489. The reversal of 189731466 is 664137981.

It is a happy number.

189731466 is a `hidden beast` number, since 189 + 7 + 3 + 1 + 466 = 666.

It can be written as a sum of positive squares in only one way, i.e., 189200025 + 531441 = 13755^2 + 729^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5270301 + ... + 5270336.

Almost surely, 2^189731466 is an apocalyptic number.

189731466 is an abundant number, since it is smaller than the sum of its proper divisors (221353416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189731466 is a wasteful number, since it uses less digits than its factorization.

189731466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10540645 (or 10540642 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 189731466 is about 13774.3045559476. The cubic root of 189731466 is about 574.6187425978.

The spelling of 189731466 in words is "one hundred eighty-nine million, seven hundred thirty-one thousand, four hundred sixty-six".