2203645249 has 27 divisors (see below), whose sum is σ = 2510443593. Its totient is φ = 1933300512.

The previous prime is 2203645217. The next prime is 2203645267. The reversal of 2203645249 is 9425463022.

The square root of 2203645249 is 46943.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 710595649 + 1493049600 = 26657^2 + 38640^2 .

It is not a de Polignac number, because 2203645249 - 2⁵ = 2203645217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2203645849) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14035879 + ... + 14036035.

Almost surely, 2^2203645249 is an apocalyptic number.

2203645249 is the 46943-rd square number.

2203645249 is the 23472-nd centered octagonal number.

It is an amenable number.

2203645249 is a deficient number, since it is larger than the sum of its proper divisors (306798344).

2203645249 is an equidigital number, since it uses as much as digits as its factorization.

2203645249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The cubic root of 2203645249 is about 1301.3093807281.

The spelling of 2203645249 in words is "two billion, two hundred three million, six hundred forty-five thousand, two hundred forty-nine".