166051386 has 12 divisors (see below), whose sum is σ = 359778042. Its totient is φ = 55350456.

The previous prime is 166051367. The next prime is 166051387. The reversal of 166051386 is 683150661.

It is a happy number.

166051386 is a `hidden beast` number, since 1 + 6 + 60 + 513 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 159896025 + 6155361 = 12645^2 + 2481^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166051386.

It is not an unprimeable number, because it can be changed into a prime (166051387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4612521 + ... + 4612556.

Almost surely, 2^166051386 is an apocalyptic number.

166051386 is an abundant number, since it is smaller than the sum of its proper divisors (193726656).

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

166051386 is a wasteful number, since it uses less digits than its factorization.

166051386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9225085 (or 9225082 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 166051386 is about 12886.0927359693. The cubic root of 166051386 is about 549.6431690950.

The spelling of 166051386 in words is "one hundred sixty-six million, fifty-one thousand, three hundred eighty-six".