2203741661 has 6 divisors (see below), whose sum is σ = 2422294686. Its totient is φ = 2003401400.

The previous prime is 2203741633. The next prime is 2203741663. The reversal of 2203741661 is 1661473022.

It can be written as a sum of positive squares in only one way, i.e., 1419405625 + 784336036 = 37675^2 + 28006^2 .

It is not a de Polignac number, because 2203741661 - 2³⁰ = 1129999837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203741663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9106250 + ... + 9106491.

It is an arithmetic number, because the mean of its divisors is an integer number (403715781).

Almost surely, 2^2203741661 is an apocalyptic number.

It is an amenable number.

2203741661 is a deficient number, since it is larger than the sum of its proper divisors (218553025).

2203741661 is a wasteful number, since it uses less digits than its factorization.

2203741661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18212763 (or 18212752 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2203741661 is about 46944.0268937380. The cubic root of 2203741661 is about 1301.3283583759.

The spelling of 2203741661 in words is "two billion, two hundred three million, seven hundred forty-one thousand, six hundred sixty-one".