166159406 has 16 divisors (see below), whose sum is σ = 297229824. Its totient is φ = 68114904.

The previous prime is 166159403. The next prime is 166159451. The reversal of 166159406 is 604951661.

It is a self number, because there is not a number n which added to its sum of digits gives 166159406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166159403) 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, 257690 + ... + 258333.

It is an arithmetic number, because the mean of its divisors is an integer number (18576864).

Almost surely, 2^166159406 is an apocalyptic number.

166159406 is a deficient number, since it is larger than the sum of its proper divisors (131070418).

166159406 is a wasteful number, since it uses less digits than its factorization.

166159406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516055.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 166159406 is about 12890.2833948676. The cubic root of 166159406 is about 549.7623281635.

The spelling of 166159406 in words is "one hundred sixty-six million, one hundred fifty-nine thousand, four hundred six".