166146061 has 2 divisors, whose sum is σ = 166146062. Its totient is φ = 166146060.

The previous prime is 166146059. The next prime is 166146077. The reversal of 166146061 is 160641661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130074025 + 36072036 = 11405^2 + 6006^2 .

It is a cyclic number.

It is not a de Polignac number, because 166146061 - 2¹ = 166146059 is a prime.

Together with 166146059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166146041) 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 as a sum of consecutive naturals, namely, 83073030 + 83073031.

It is an arithmetic number, because the mean of its divisors is an integer number (83073031).

Almost surely, 2^166146061 is an apocalyptic number.

It is an amenable number.

166146061 is a deficient number, since it is larger than the sum of its proper divisors (1).

166146061 is an equidigital number, since it uses as much as digits as its factorization.

166146061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 166146061 is about 12889.7657465138. The cubic root of 166146061 is about 549.7476098179.

It can be divided in two parts, 1661460 and 61, that added together give a square (1661521 = 1289²).

The spelling of 166146061 in words is "one hundred sixty-six million, one hundred forty-six thousand, sixty-one".