166153266 has 12 divisors (see below), whose sum is σ = 359998782. Its totient is φ = 55384416.

The previous prime is 166153249. The next prime is 166153289. The reversal of 166153266 is 662351661.

166153266 is a `hidden beast` number, since 1 + 6 + 61 + 532 + 66 = 666.

166153266 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 148133241 + 18020025 = 12171^2 + 4245^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 166153266.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4615351 + ... + 4615386.

Almost surely, 2^166153266 is an apocalyptic number.

166153266 is an abundant number, since it is smaller than the sum of its proper divisors (193845516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166153266 is a wasteful number, since it uses less digits than its factorization.

166153266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230745 (or 9230742 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 166153266 is about 12890.0452287802. The cubic root of 166153266 is about 549.7555563886.

It can be divided in two parts, 16615 and 3266, that added together give a square (19881 = 141²).

The spelling of 166153266 in words is "one hundred sixty-six million, one hundred fifty-three thousand, two hundred sixty-six".