166376533 has 2 divisors, whose sum is σ = 166376534. Its totient is φ = 166376532.

The previous prime is 166376489. The next prime is 166376543. The reversal of 166376533 is 335673661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91068849 + 75307684 = 9543^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 166376533 - 2¹⁷ = 166245461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166376543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83188266 + 83188267.

It is an arithmetic number, because the mean of its divisors is an integer number (83188267).

Almost surely, 2^166376533 is an apocalyptic number.

It is an amenable number.

166376533 is a deficient number, since it is larger than the sum of its proper divisors (1).

166376533 is an equidigital number, since it uses as much as digits as its factorization.

166376533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 40.

The square root of 166376533 is about 12898.7027642318. The cubic root of 166376533 is about 550.0016892510.

The spelling of 166376533 in words is "one hundred sixty-six million, three hundred seventy-six thousand, five hundred thirty-three".