180091216 has 40 divisors (see below), whose sum is σ = 361476864. Its totient is φ = 86862720.

The previous prime is 180091211. The next prime is 180091231. The reversal of 180091216 is 612190081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180091211) 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, 51706 + ... + 55078.

Almost surely, 2^180091216 is an apocalyptic number.

180091216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

180091216 is an abundant number, since it is smaller than the sum of its proper divisors (181385648).

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

180091216 is a wasteful number, since it uses less digits than its factorization.

180091216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499 (or 3493 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 180091216 is about 13419.8068540497. The cubic root of 180091216 is about 564.7169762697.

The spelling of 180091216 in words is "one hundred eighty million, ninety-one thousand, two hundred sixteen".