166419422 has 16 divisors (see below), whose sum is σ = 269332560. Its totient is φ = 76665792.

The previous prime is 166419419. The next prime is 166419427. The reversal of 166419422 is 224914661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166419427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8954 + ... + 20322.

It is an arithmetic number, because the mean of its divisors is an integer number (16833285).

Almost surely, 2^166419422 is an apocalyptic number.

166419422 is a deficient number, since it is larger than the sum of its proper divisors (102913138).

166419422 is a wasteful number, since it uses less digits than its factorization.

166419422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11947.

The product of its digits is 20736, while the sum is 35.

The square root of 166419422 is about 12900.3651886294. The cubic root of 166419422 is about 550.0489455064.

The spelling of 166419422 in words is "one hundred sixty-six million, four hundred nineteen thousand, four hundred twenty-two".