166387853 has 8 divisors (see below), whose sum is σ = 172037400. Its totient is φ = 160799040.

The previous prime is 166387831. The next prime is 166387901. The reversal of 166387853 is 358783661.

It is a happy number.

166387853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22915369 + 143472484 = 4787^2 + 11978^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-166387853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166387798 and 166387807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166387813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9578 + ... + 20603.

It is an arithmetic number, because the mean of its divisors is an integer number (21504675).

Almost surely, 2^166387853 is an apocalyptic number.

It is an amenable number.

166387853 is a deficient number, since it is larger than the sum of its proper divisors (5649547).

166387853 is a wasteful number, since it uses less digits than its factorization.

166387853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30367.

The product of its digits is 725760, while the sum is 47.

The square root of 166387853 is about 12899.1415605846. The cubic root of 166387853 is about 550.0141627207.

The spelling of 166387853 in words is "one hundred sixty-six million, three hundred eighty-seven thousand, eight hundred fifty-three".