166128486 has 16 divisors (see below), whose sum is σ = 332506944. Its totient is φ = 55334504.

The previous prime is 166128439. The next prime is 166128493. The reversal of 166128486 is 684821661.

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 7 ways as a sum of consecutive naturals, for example, 1140 + ... + 18263.

It is an arithmetic number, because the mean of its divisors is an integer number (20781684).

Almost surely, 2^166128486 is an apocalyptic number.

166128486 is an abundant number, since it is smaller than the sum of its proper divisors (166378458).

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

166128486 is a wasteful number, since it uses less digits than its factorization.

166128486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20835.

The product of its digits is 110592, while the sum is 42.

The square root of 166128486 is about 12889.0839860713. The cubic root of 166128486 is about 549.7282249568.

The spelling of 166128486 in words is "one hundred sixty-six million, one hundred twenty-eight thousand, four hundred eighty-six".