166549153 has 16 divisors (see below), whose sum is σ = 183202560. Its totient is φ = 150774016.

The previous prime is 166549151. The next prime is 166549189. The reversal of 166549153 is 351945661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 166549153 - 2¹ = 166549151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166549151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45375 + ... + 48907.

It is an arithmetic number, because the mean of its divisors is an integer number (11450160).

Almost surely, 2^166549153 is an apocalyptic number.

It is an amenable number.

166549153 is a deficient number, since it is larger than the sum of its proper divisors (16653407).

166549153 is a wasteful number, since it uses less digits than its factorization.

166549153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656.

The product of its digits is 97200, while the sum is 40.

The square root of 166549153 is about 12905.3924000783. The cubic root of 166549153 is about 550.1918372126.

The spelling of 166549153 in words is "one hundred sixty-six million, five hundred forty-nine thousand, one hundred fifty-three".