180013838 has 16 divisors (see below), whose sum is σ = 283461120. Its totient is φ = 85625400.

The previous prime is 180013831. The next prime is 180013853. The reversal of 180013838 is 838310081.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180013831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20948 + ... + 28263.

It is an arithmetic number, because the mean of its divisors is an integer number (17716320).

Almost surely, 2^180013838 is an apocalyptic number.

180013838 is a deficient number, since it is larger than the sum of its proper divisors (103447282).

180013838 is a wasteful number, since it uses less digits than its factorization.

180013838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49303.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 180013838 is about 13416.9235668986. The cubic root of 180013838 is about 564.6360859096.

The spelling of 180013838 in words is "one hundred eighty million, thirteen thousand, eight hundred thirty-eight".