166045730 has 8 divisors (see below), whose sum is σ = 298882332. Its totient is φ = 66418288.

The previous prime is 166045687. The next prime is 166045739. The reversal of 166045730 is 37540661.

It can be written as a sum of positive squares in 2 ways, for example, as 162129289 + 3916441 = 12733^2 + 1979^2 .

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

It is not an unprimeable number, because it can be changed into a prime (166045739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8302277 + ... + 8302296.

Almost surely, 2^166045730 is an apocalyptic number.

166045730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166045730 is a deficient number, since it is larger than the sum of its proper divisors (132836602).

166045730 is a wasteful number, since it uses less digits than its factorization.

166045730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16604580.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 166045730 is about 12885.8732726967. The cubic root of 166045730 is about 549.6369284223.

The spelling of 166045730 in words is "one hundred sixty-six million, forty-five thousand, seven hundred thirty".