166185130 has 16 divisors (see below), whose sum is σ = 307218600. Its totient is φ = 64677312.

The previous prime is 166185127. The next prime is 166185133. The reversal of 166185130 is 31581661.

It is an interprime number because it is at equal distance from previous prime (166185127) and next prime (166185133).

It can be written as a sum of positive squares in 4 ways, for example, as 163865601 + 2319529 = 12801^2 + 1523^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166185092 and 166185101.

It is not an unprimeable number, because it can be changed into a prime (166185133) 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, 224205 + ... + 224944.

Almost surely, 2^166185130 is an apocalyptic number.

166185130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166185130 is a deficient number, since it is larger than the sum of its proper divisors (141033470).

166185130 is a wasteful number, since it uses less digits than its factorization.

166185130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449193.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 166185130 is about 12891.2811620878. The cubic root of 166185130 is about 549.7906972193.

The spelling of 166185130 in words is "one hundred sixty-six million, one hundred eighty-five thousand, one hundred thirty".