166478411 has 8 divisors (see below), whose sum is σ = 183311424. Its totient is φ = 149928520.

The previous prime is 166478407. The next prime is 166478423. The reversal of 166478411 is 114874661.

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 166478411 - 2² = 166478407 is a prime.

It is a super-2 number, since 2×166478411² = 55430122658169842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166478441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69545 + ... + 71898.

It is an arithmetic number, because the mean of its divisors is an integer number (22913928).

Almost surely, 2^166478411 is an apocalyptic number.

166478411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166478411 is a deficient number, since it is larger than the sum of its proper divisors (16833013).

166478411 is a wasteful number, since it uses less digits than its factorization.

166478411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141561.

The product of its digits is 32256, while the sum is 38.

The square root of 166478411 is about 12902.6513166868. The cubic root of 166478411 is about 550.1139279143.

The spelling of 166478411 in words is "one hundred sixty-six million, four hundred seventy-eight thousand, four hundred eleven".