166403045 has 16 divisors (see below), whose sum is σ = 219335040. Its totient is φ = 120631104.

The previous prime is 166403011. The next prime is 166403047. The reversal of 166403045 is 540304661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 166403045 - 2¹⁰ = 166402021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166402999 and 166403017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166403047) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35894 + ... + 40263.

It is an arithmetic number, because the mean of its divisors is an integer number (13708440).

Almost surely, 2^166403045 is an apocalyptic number.

It is an amenable number.

166403045 is a deficient number, since it is larger than the sum of its proper divisors (52931995).

166403045 is a wasteful number, since it uses less digits than its factorization.

166403045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76204.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 166403045 is about 12899.7304235399. The cubic root of 166403045 is about 550.0309018450.

The spelling of 166403045 in words is "one hundred sixty-six million, four hundred three thousand, forty-five".