166445016 has 128 divisors (see below), whose sum is σ = 457228800. Its totient is φ = 50319360.

The previous prime is 166445009. The next prime is 166445033. The reversal of 166445016 is 610544661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1715880 + ... + 1715976.

It is an arithmetic number, because the mean of its divisors is an integer number (3572100).

Almost surely, 2^166445016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166445016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228614400).

166445016 is an abundant number, since it is smaller than the sum of its proper divisors (290783784).

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

166445016 is a wasteful number, since it uses less digits than its factorization.

166445016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 166445016 is about 12901.3571379138. The cubic root of 166445016 is about 550.0771417968.

Adding to 166445016 its reverse (610544661), we get a palindrome (776989677).

The spelling of 166445016 in words is "one hundred sixty-six million, four hundred forty-five thousand, sixteen".