166180770 has 192 divisors, whose sum is σ = 521404416. Its totient is φ = 35925120.

The previous prime is 166180769. The next prime is 166180771. The reversal of 166180770 is 77081661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166180769) and next prime (166180771).

It is not an unprimeable number, because it can be changed into a prime (166180771) 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 95 ways as a sum of consecutive naturals, for example, 1308447 + ... + 1308573.

It is an arithmetic number, because the mean of its divisors is an integer number (2715648).

Almost surely, 2^166180770 is an apocalyptic number.

166180770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166180770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260702208).

166180770 is an abundant number, since it is smaller than the sum of its proper divisors (355223646).

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

166180770 is a wasteful number, since it uses less digits than its factorization.

166180770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 166180770 is about 12891.1120544350. The cubic root of 166180770 is about 549.7858891108.

The spelling of 166180770 in words is "one hundred sixty-six million, one hundred eighty thousand, seven hundred seventy".