166147049 has 2 divisors, whose sum is σ = 166147050. Its totient is φ = 166147048.

The previous prime is 166147031. The next prime is 166147063. The reversal of 166147049 is 940741661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115949824 + 50197225 = 10768^2 + 7085^2 .

It is a cyclic number.

It is not a de Polignac number, because 166147049 - 2⁸ = 166146793 is a prime.

It is not a weakly prime, because it can be changed into another prime (166147019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83073524 + 83073525.

It is an arithmetic number, because the mean of its divisors is an integer number (83073525).

Almost surely, 2^166147049 is an apocalyptic number.

It is an amenable number.

166147049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166147049 is an equidigital number, since it uses as much as digits as its factorization.

166147049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166147049 is about 12889.8040714357. The cubic root of 166147049 is about 549.7486995209.

The spelling of 166147049 in words is "one hundred sixty-six million, one hundred forty-seven thousand, forty-nine".