180900549 has 24 divisors (see below), whose sum is σ = 266666400. Its totient is φ = 118139040.

The previous prime is 180900529. The next prime is 180900557. The reversal of 180900549 is 945009081.

It is not a de Polignac number, because 180900549 - 2¹⁶ = 180835013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180900529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244422 + ... + 245160.

It is an arithmetic number, because the mean of its divisors is an integer number (11111100).

Almost surely, 2^180900549 is an apocalyptic number.

It is an amenable number.

180900549 is a deficient number, since it is larger than the sum of its proper divisors (85765851).

180900549 is a wasteful number, since it uses less digits than its factorization.

180900549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 180900549 is about 13449.9274719234. The cubic root of 180900549 is about 565.5616614322.

The spelling of 180900549 in words is "one hundred eighty million, nine hundred thousand, five hundred forty-nine".