166051069 has 2 divisors, whose sum is σ = 166051070. Its totient is φ = 166051068.

The previous prime is 166051063. The next prime is 166051073. The reversal of 166051069 is 960150661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87516025 + 78535044 = 9355^2 + 8862^2 .

It is an emirp because it is prime and its reverse (960150661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166051069 - 2¹¹ = 166049021 is a prime.

It is a super-2 number, since 2×166051069² = 55145915032085522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166051063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83025534 + 83025535.

It is an arithmetic number, because the mean of its divisors is an integer number (83025535).

Almost surely, 2^166051069 is an apocalyptic number.

It is an amenable number.

166051069 is a deficient number, since it is larger than the sum of its proper divisors (1).

166051069 is an equidigital number, since it uses as much as digits as its factorization.

166051069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 166051069 is about 12886.0804358812. The cubic root of 166051069 is about 549.6428193298.

The spelling of 166051069 in words is "one hundred sixty-six million, fifty-one thousand, sixty-nine".