180664992 has 120 divisors (see below), whose sum is σ = 543001536. Its totient is φ = 58900608.

The previous prime is 180664963. The next prime is 180665003. The reversal of 180664992 is 299466081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 121083 + ... + 122565.

Almost surely, 2^180664992 is an apocalyptic number.

180664992 is a gapful number since it is divisible by the number (12) 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 180664992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271500768).

180664992 is an abundant number, since it is smaller than the sum of its proper divisors (362336544).

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

180664992 is a wasteful number, since it uses less digits than its factorization.

180664992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 180664992 is about 13441.1678064073. The cubic root of 180664992 is about 565.3160755283.

The spelling of 180664992 in words is "one hundred eighty million, six hundred sixty-four thousand, nine hundred ninety-two".