180131966 has 36 divisors (see below), whose sum is σ = 329592744. Its totient is φ = 72313920.

The previous prime is 180131957. The next prime is 180131969. The reversal of 180131966 is 669131081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180131969) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 853601 + ... + 853811.

It is an arithmetic number, because the mean of its divisors is an integer number (9155354).

Almost surely, 2^180131966 is an apocalyptic number.

180131966 is a deficient number, since it is larger than the sum of its proper divisors (149460778).

180131966 is an equidigital number, since it uses as much as digits as its factorization.

180131966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 180131966 is about 13421.3250463581. The cubic root of 180131966 is about 564.7595666892.

The spelling of 180131966 in words is "one hundred eighty million, one hundred thirty-one thousand, nine hundred sixty-six".