166211530 has 16 divisors (see below), whose sum is σ = 299376000. Its totient is φ = 66441232.

The previous prime is 166211527. The next prime is 166211597. The reversal of 166211530 is 35112661.

166211530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166211495 and 166211504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13971 + ... + 22969.

It is an arithmetic number, because the mean of its divisors is an integer number (18711000).

Almost surely, 2^166211530 is an apocalyptic number.

166211530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166211530 is a deficient number, since it is larger than the sum of its proper divisors (133164470).

166211530 is a wasteful number, since it uses less digits than its factorization.

166211530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10853.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 166211530 is about 12892.3050693039. The cubic root of 166211530 is about 549.8198087407.

The spelling of 166211530 in words is "one hundred sixty-six million, two hundred eleven thousand, five hundred thirty".