2243961669 has 4 divisors (see below), whose sum is σ = 2991948896. Its totient is φ = 1495974444.

The previous prime is 2243961661. The next prime is 2243961683. The reversal of 2243961669 is 9661693422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2243961669 - 2³ = 2243961661 is a prime.

It is a super-2 number, since 2×2243961669² = 10070727943882531122, 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 (2243961661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373993609 + ... + 373993614.

It is an arithmetic number, because the mean of its divisors is an integer number (747987224).

Almost surely, 2^2243961669 is an apocalyptic number.

It is an amenable number.

2243961669 is a deficient number, since it is larger than the sum of its proper divisors (747987227).

2243961669 is an equidigital number, since it uses as much as digits as its factorization.

2243961669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747987226.

The product of its digits is 839808, while the sum is 48.

The square root of 2243961669 is about 47370.4725435582. The cubic root of 2243961669 is about 1309.1974318012.

The spelling of 2243961669 in words is "two billion, two hundred forty-three million, nine hundred sixty-one thousand, six hundred sixty-nine".