180249438 has 16 divisors (see below), whose sum is σ = 372128256. Its totient is φ = 58144920.

The previous prime is 180249437. The next prime is 180249451. The reversal of 180249438 is 834942081.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 180249396 and 180249405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180249437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484356 + ... + 484727.

It is an arithmetic number, because the mean of its divisors is an integer number (23258016).

Almost surely, 2^180249438 is an apocalyptic number.

180249438 is an abundant number, since it is smaller than the sum of its proper divisors (191878818).

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

180249438 is a wasteful number, since it uses less digits than its factorization.

180249438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969119.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 180249438 is about 13425.7006521075. The cubic root of 180249438 is about 564.8823082189.

The spelling of 180249438 in words is "one hundred eighty million, two hundred forty-nine thousand, four hundred thirty-eight".