180140664 has 64 divisors (see below), whose sum is σ = 494928000. Its totient is φ = 54184320.

The previous prime is 180140657. The next prime is 180140683. The reversal of 180140664 is 466041081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34242 + ... + 39150.

It is an arithmetic number, because the mean of its divisors is an integer number (7733250).

Almost surely, 2^180140664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180140664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247464000).

180140664 is an abundant number, since it is smaller than the sum of its proper divisors (314787336).

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

180140664 is a wasteful number, since it uses less digits than its factorization.

180140664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068 (or 5064 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 180140664 is about 13421.6490790066. The cubic root of 180140664 is about 564.7686566909.

The spelling of 180140664 in words is "one hundred eighty million, one hundred forty thousand, six hundred sixty-four".