166544929 has 2 divisors, whose sum is σ = 166544930. Its totient is φ = 166544928.

The previous prime is 166544893. The next prime is 166544951. The reversal of 166544929 is 929445661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145154304 + 21390625 = 12048^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 166544929 - 2¹³ = 166536737 is a prime.

It is not a weakly prime, because it can be changed into another prime (166544029) 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, 83272464 + 83272465.

It is an arithmetic number, because the mean of its divisors is an integer number (83272465).

Almost surely, 2^166544929 is an apocalyptic number.

It is an amenable number.

166544929 is a deficient number, since it is larger than the sum of its proper divisors (1).

166544929 is an equidigital number, since it uses as much as digits as its factorization.

166544929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The square root of 166544929 is about 12905.2287465198. The cubic root of 166544929 is about 550.1871858731.

The spelling of 166544929 in words is "one hundred sixty-six million, five hundred forty-four thousand, nine hundred twenty-nine".