166500145 has 8 divisors (see below), whose sum is σ = 228343104. Its totient is φ = 114171504.

The previous prime is 166500143. The next prime is 166500203. The reversal of 166500145 is 541005661.

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

It is a cyclic number.

It is not a de Polignac number, because 166500145 - 2¹ = 166500143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166500143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2378539 + ... + 2378608.

It is an arithmetic number, because the mean of its divisors is an integer number (28542888).

Almost surely, 2^166500145 is an apocalyptic number.

It is an amenable number.

166500145 is a deficient number, since it is larger than the sum of its proper divisors (61842959).

166500145 is an equidigital number, since it uses as much as digits as its factorization.

166500145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757159.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 166500145 is about 12903.4935191986. The cubic root of 166500145 is about 550.1378662652.

The spelling of 166500145 in words is "one hundred sixty-six million, five hundred thousand, one hundred forty-five".