166958345 has 4 divisors (see below), whose sum is σ = 200350020. Its totient is φ = 133566672.

The previous prime is 166958329. The next prime is 166958383. The reversal of 166958345 is 543859661.

It is a happy number.

166958345 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: 543859661 = 1019 ⋅533719.

It can be written as a sum of positive squares in 2 ways, for example, as 82391929 + 84566416 = 9077^2 + 9196^2 .

It is a cyclic number.

It is not a de Polignac number, because 166958345 - 2⁴ = 166958329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166958345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16695830 + ... + 16695839.

It is an arithmetic number, because the mean of its divisors is an integer number (50087505).

Almost surely, 2^166958345 is an apocalyptic number.

It is an amenable number.

166958345 is a deficient number, since it is larger than the sum of its proper divisors (33391675).

166958345 is an equidigital number, since it uses as much as digits as its factorization.

166958345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33391674.

The product of its digits is 777600, while the sum is 47.

The square root of 166958345 is about 12921.2362024692. The cubic root of 166958345 is about 550.6420545995.

The spelling of 166958345 in words is "one hundred sixty-six million, nine hundred fifty-eight thousand, three hundred forty-five".