166123033 has 2 divisors, whose sum is σ = 166123034. Its totient is φ = 166123032.

The previous prime is 166123019. The next prime is 166123037. The reversal of 166123033 is 330321661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144889369 + 21233664 = 12037^2 + 4608^2 .

It is a cyclic number.

It is not a de Polignac number, because 166123033 - 2¹³ = 166114841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166122989 and 166123007.

It is not a weakly prime, because it can be changed into another prime (166123037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83061516 + 83061517.

It is an arithmetic number, because the mean of its divisors is an integer number (83061517).

Almost surely, 2^166123033 is an apocalyptic number.

It is an amenable number.

166123033 is a deficient number, since it is larger than the sum of its proper divisors (1).

166123033 is an equidigital number, since it uses as much as digits as its factorization.

166123033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 166123033 is about 12888.8724487443. The cubic root of 166123033 is about 549.7222101328.

Adding to 166123033 its reverse (330321661), we get a palindrome (496444694).

The spelling of 166123033 in words is "one hundred sixty-six million, one hundred twenty-three thousand, thirty-three".