180166816 has 48 divisors (see below), whose sum is σ = 395357760. Its totient is φ = 80317440.

The previous prime is 180166783. The next prime is 180166837. The reversal of 180166816 is 618661081.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621 + ... + 19051.

It is an arithmetic number, because the mean of its divisors is an integer number (8236620).

Almost surely, 2^180166816 is an apocalyptic number.

180166816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180166816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197678880).

180166816 is an abundant number, since it is smaller than the sum of its proper divisors (215190944).

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

180166816 is a wasteful number, since it uses less digits than its factorization.

180166816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17477 (or 17469 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 180166816 is about 13422.6232905494. The cubic root of 180166816 is about 564.7959855477.

The spelling of 180166816 in words is "one hundred eighty million, one hundred sixty-six thousand, eight hundred sixteen".