166481418 has 16 divisors (see below), whose sum is σ = 333537120. Its totient is φ = 55398096.

The previous prime is 166481417. The next prime is 166481449. The reversal of 166481418 is 814184661.

It is not an unprimeable number, because it can be changed into a prime (166481411) 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, 20113 + ... + 27156.

It is an arithmetic number, because the mean of its divisors is an integer number (20846070).

Almost surely, 2^166481418 is an apocalyptic number.

166481418 is an abundant number, since it is smaller than the sum of its proper divisors (167055702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166481418 is a wasteful number, since it uses less digits than its factorization.

166481418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47861.

The product of its digits is 36864, while the sum is 39.

The square root of 166481418 is about 12902.7678425987. The cubic root of 166481418 is about 550.1172400207.

The spelling of 166481418 in words is "one hundred sixty-six million, four hundred eighty-one thousand, four hundred eighteen".