166043153 has 4 divisors (see below), whose sum is σ = 170093028. Its totient is φ = 161993280.

The previous prime is 166043149. The next prime is 166043173. The reversal of 166043153 is 351340661.

It is a happy number.

166043153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351340661 = 7 ⋅50191523.

It can be written as a sum of positive squares in 2 ways, for example, as 25573249 + 140469904 = 5057^2 + 11852^2 .

It is a cyclic number.

It is not a de Polignac number, because 166043153 - 2² = 166043149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166043123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024876 + ... + 2024957.

It is an arithmetic number, because the mean of its divisors is an integer number (42523257).

Almost surely, 2^166043153 is an apocalyptic number.

It is an amenable number.

166043153 is a deficient number, since it is larger than the sum of its proper divisors (4049875).

166043153 is an equidigital number, since it uses as much as digits as its factorization.

166043153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049874.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 166043153 is about 12885.7732790857. The cubic root of 166043153 is about 549.6340849854.

The spelling of 166043153 in words is "one hundred sixty-six million, forty-three thousand, one hundred fifty-three".