180218156 has 48 divisors (see below), whose sum is σ = 354352320. Its totient is φ = 79749120.

The previous prime is 180218153. The next prime is 180218177. The reversal of 180218156 is 651812081.

It is not an unprimeable number, because it can be changed into a prime (180218153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94460 + ... + 96348.

It is an arithmetic number, because the mean of its divisors is an integer number (7382340).

Almost surely, 2^180218156 is an apocalyptic number.

It is an amenable number.

180218156 is a deficient number, since it is larger than the sum of its proper divisors (174134164).

180218156 is a wasteful number, since it uses less digits than its factorization.

180218156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 180218156 is about 13424.5355971818. The cubic root of 180218156 is about 564.8496281897.

The spelling of 180218156 in words is "one hundred eighty million, two hundred eighteen thousand, one hundred fifty-six".