2205450181 has 12 divisors (see below), whose sum is σ = 2463921292. Its totient is φ = 1972080000.

The previous prime is 2205450161. The next prime is 2205450199. The reversal of 2205450181 is 1810545022.

It can be written as a sum of positive squares in 2 ways, for example, as 81162081 + 2124288100 = 9009^2 + 46090^2 .

It is not a de Polignac number, because 2205450181 - 2⁹ = 2205449669 is a prime.

It is a super-2 number, since 2×2205450181² = 9728021001745865522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205450101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142020 + ... + 156781.

Almost surely, 2^2205450181 is an apocalyptic number.

It is an amenable number.

2205450181 is a deficient number, since it is larger than the sum of its proper divisors (258471111).

2205450181 is a wasteful number, since it uses less digits than its factorization.

2205450181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298884 (or 298873 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 2205450181 is about 46962.2207843709. The cubic root of 2205450181 is about 1301.6645700775.

The spelling of 2205450181 in words is "two billion, two hundred five million, four hundred fifty thousand, one hundred eighty-one".