158166001 has 8 divisors (see below), whose sum is σ = 180904320. Its totient is φ = 135463488.

The previous prime is 158165989. The next prime is 158166017. The reversal of 158166001 is 100661851.

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 158166001 - 2²³ = 149777393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158166401) 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 7 ways as a sum of consecutive naturals, for example, 1305 + ... + 17833.

It is an arithmetic number, because the mean of its divisors is an integer number (22613040).

Almost surely, 2^158166001 is an apocalyptic number.

It is an amenable number.

158166001 is a deficient number, since it is larger than the sum of its proper divisors (22738319).

158166001 is a wasteful number, since it uses less digits than its factorization.

158166001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17903.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 158166001 is about 12576.4065217374. The cubic root of 158166001 is about 540.8012807079.

The spelling of 158166001 in words is "one hundred fifty-eight million, one hundred sixty-six thousand, one".