166522190 has 16 divisors (see below), whose sum is σ = 304821360. Its totient is φ = 65479680.

The previous prime is 166522189. The next prime is 166522199. The reversal of 166522190 is 91225661.

It is a happy number.

It is a super-2 number, since 2×166522190² = 55459279524792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166522199) 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 7 ways as a sum of consecutive naturals, for example, 140531 + ... + 141710.

It is an arithmetic number, because the mean of its divisors is an integer number (19051335).

Almost surely, 2^166522190 is an apocalyptic number.

166522190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166522190 is a deficient number, since it is larger than the sum of its proper divisors (138299170).

166522190 is a wasteful number, since it uses less digits than its factorization.

166522190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282307.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 166522190 is about 12904.3477169518. The cubic root of 166522190 is about 550.1621450309.

The spelling of 166522190 in words is "one hundred sixty-six million, five hundred twenty-two thousand, one hundred ninety".