180154244 has 6 divisors (see below), whose sum is σ = 315269934. Its totient is φ = 90077120.

The previous prime is 180154241. The next prime is 180154259. The reversal of 180154244 is 442451081.

It can be written as a sum of positive squares in only one way, i.e., 145202500 + 34951744 = 12050^2 + 5912^2 .

It is not an unprimeable number, because it can be changed into a prime (180154241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22519277 + ... + 22519284.

It is an arithmetic number, because the mean of its divisors is an integer number (52544989).

Almost surely, 2^180154244 is an apocalyptic number.

It is an amenable number.

180154244 is a deficient number, since it is larger than the sum of its proper divisors (135115690).

180154244 is a wasteful number, since it uses less digits than its factorization.

180154244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45038565 (or 45038563 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 180154244 is about 13422.1549685585. The cubic root of 180154244 is about 564.7828481297.

The spelling of 180154244 in words is "one hundred eighty million, one hundred fifty-four thousand, two hundred forty-four".