2243531661 has 8 divisors (see below), whose sum is σ = 3418714944. Its totient is φ = 1282018080.

The previous prime is 2243531657. The next prime is 2243531671. The reversal of 2243531661 is 1661353422.

2243531661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2243531661 - 2² = 2243531657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243531621) 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, 53417400 + ... + 53417441.

It is an arithmetic number, because the mean of its divisors is an integer number (427339368).

Almost surely, 2^2243531661 is an apocalyptic number.

2243531661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2243531661 is a deficient number, since it is larger than the sum of its proper divisors (1175183283).

2243531661 is a wasteful number, since it uses less digits than its factorization.

2243531661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106834851.

The product of its digits is 25920, while the sum is 33.

The square root of 2243531661 is about 47365.9335493348. The cubic root of 2243531661 is about 1309.1137997527.

The spelling of 2243531661 in words is "two billion, two hundred forty-three million, five hundred thirty-one thousand, six hundred sixty-one".