166038001 has 4 divisors (see below), whose sum is σ = 167152500. Its totient is φ = 164923504.

The previous prime is 166037959. The next prime is 166038043. The reversal of 166038001 is 100830661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100830661 = 37 ⋅2725153.

It is an interprime number because it is at equal distance from previous prime (166037959) and next prime (166038043).

It can be written as a sum of positive squares in 2 ways, for example, as 63218401 + 102819600 = 7951^2 + 10140^2 .

It is a cyclic number.

It is not a de Polignac number, because 166038001 - 2⁷ = 166037873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166038071) 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, 557026 + ... + 557323.

It is an arithmetic number, because the mean of its divisors is an integer number (41788125).

Almost surely, 2^166038001 is an apocalyptic number.

It is an amenable number.

166038001 is a deficient number, since it is larger than the sum of its proper divisors (1114499).

166038001 is a wasteful number, since it uses less digits than its factorization.

166038001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114498.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 166038001 is about 12885.5733671420. The cubic root of 166038001 is about 549.6284002301.

Adding to 166038001 its reverse (100830661), we get a palindrome (266868662).

The spelling of 166038001 in words is "one hundred sixty-six million, thirty-eight thousand, one".