166828049 has 2 divisors, whose sum is σ = 166828050. Its totient is φ = 166828048.

The previous prime is 166828027. The next prime is 166828073. The reversal of 166828049 is 940828661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146289025 + 20539024 = 12095^2 + 4532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166828049 is a prime.

It is not a weakly prime, because it can be changed into another prime (166828099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83414024 + 83414025.

It is an arithmetic number, because the mean of its divisors is an integer number (83414025).

Almost surely, 2^166828049 is an apocalyptic number.

It is an amenable number.

166828049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166828049 is an equidigital number, since it uses as much as digits as its factorization.

166828049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 166828049 is about 12916.1932859492. The cubic root of 166828049 is about 550.4987750904.

The spelling of 166828049 in words is "one hundred sixty-six million, eight hundred twenty-eight thousand, forty-nine".