180542918 has 8 divisors (see below), whose sum is σ = 274628880. Its totient is φ = 88999960.

The previous prime is 180542917. The next prime is 180542927. The reversal of 180542918 is 819245081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180542911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635573 + ... + 635856.

It is an arithmetic number, because the mean of its divisors is an integer number (34328610).

Almost surely, 2^180542918 is an apocalyptic number.

180542918 is a deficient number, since it is larger than the sum of its proper divisors (94085962).

180542918 is a wasteful number, since it uses less digits than its factorization.

180542918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271502.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 180542918 is about 13436.6259901807. The cubic root of 180542918 is about 565.1887202081.

Adding to 180542918 its reverse (819245081), we get a palindrome (999787999).

The spelling of 180542918 in words is "one hundred eighty million, five hundred forty-two thousand, nine hundred eighteen".