166159407 has 8 divisors (see below), whose sum is σ = 222827184. Its totient is φ = 110132288.

The previous prime is 166159403. The next prime is 166159451. The reversal of 166159407 is 704951661.

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 166159407 - 2² = 166159403 is a prime.

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, 159558 + ... + 160595.

It is an arithmetic number, because the mean of its divisors is an integer number (27853398).

Almost surely, 2^166159407 is an apocalyptic number.

166159407 is a deficient number, since it is larger than the sum of its proper divisors (56667777).

166159407 is a wasteful number, since it uses less digits than its factorization.

166159407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320329.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 166159407 is about 12890.2834336565. The cubic root of 166159407 is about 549.7623292664.

The spelling of 166159407 in words is "one hundred sixty-six million, one hundred fifty-nine thousand, four hundred seven".