166110955 has 4 divisors (see below), whose sum is σ = 199333152. Its totient is φ = 132888760.

The previous prime is 166110953. The next prime is 166110979. The reversal of 166110955 is 559011661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559011661 = 13 ⋅43000897.

It is not a de Polignac number, because 166110955 - 2¹ = 166110953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166110955.

It is not an unprimeable number, because it can be changed into a prime (166110953) 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 3 ways as a sum of consecutive naturals, for example, 16611091 + ... + 16611100.

It is an arithmetic number, because the mean of its divisors is an integer number (49833288).

Almost surely, 2^166110955 is an apocalyptic number.

166110955 is a deficient number, since it is larger than the sum of its proper divisors (33222197).

166110955 is an equidigital number, since it uses as much as digits as its factorization.

166110955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33222196.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 166110955 is about 12888.4038965265. The cubic root of 166110955 is about 549.7088872647.

The spelling of 166110955 in words is "one hundred sixty-six million, one hundred ten thousand, nine hundred fifty-five".