166378322 has 16 divisors (see below), whose sum is σ = 272462400. Its totient is φ = 75569040.

The previous prime is 166378321. The next prime is 166378339. The reversal of 166378322 is 223873661.

It is not an unprimeable number, because it can be changed into a prime (166378321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43004 + ... + 46712.

It is an arithmetic number, because the mean of its divisors is an integer number (17028900).

Almost surely, 2^166378322 is an apocalyptic number.

166378322 is a deficient number, since it is larger than the sum of its proper divisors (106084078).

166378322 is a wasteful number, since it uses less digits than its factorization.

166378322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5761.

The product of its digits is 72576, while the sum is 38.

The square root of 166378322 is about 12898.7721121043. The cubic root of 166378322 is about 550.0036605817.

The spelling of 166378322 in words is "one hundred sixty-six million, three hundred seventy-eight thousand, three hundred twenty-two".