180949356 has 144 divisors (see below), whose sum is σ = 563834880. Its totient is φ = 49986720.

The previous prime is 180949339. The next prime is 180949399. The reversal of 180949356 is 653949081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163501 + ... + 164603.

It is an arithmetic number, because the mean of its divisors is an integer number (3915520).

Almost surely, 2^180949356 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 180949356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281917440).

180949356 is an abundant number, since it is smaller than the sum of its proper divisors (382885524).

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

180949356 is a wasteful number, since it uses less digits than its factorization.

180949356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 180949356 is about 13451.7417459599. The cubic root of 180949356 is about 565.6125197372.

The spelling of 180949356 in words is "one hundred eighty million, nine hundred forty-nine thousand, three hundred fifty-six".