2231996849 has 4 divisors (see below), whose sum is σ = 2232102900. Its totient is φ = 2231890800.

The previous prime is 2231996839. The next prime is 2231996863. The reversal of 2231996849 is 9486991322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9486991322 = 2 ⋅4743495661.

It can be written as a sum of positive squares in 2 ways, for example, as 2140450225 + 91546624 = 46265^2 + 9568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231996849 - 2¹² = 2231992753 is a prime.

It is a super-3 number, since 3×2231996849³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231996849.

It is not an unprimeable number, because it can be changed into a prime (2231996839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9602 + ... + 67499.

It is an arithmetic number, because the mean of its divisors is an integer number (558025725).

Almost surely, 2^2231996849 is an apocalyptic number.

It is an amenable number.

2231996849 is a deficient number, since it is larger than the sum of its proper divisors (106051).

2231996849 is an equidigital number, since it uses as much as digits as its factorization.

2231996849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106050.

The product of its digits is 1679616, while the sum is 53.

The square root of 2231996849 is about 47244.0138959424. The cubic root of 2231996849 is about 1306.8664004325.

The spelling of 2231996849 in words is "two billion, two hundred thirty-one million, nine hundred ninety-six thousand, eight hundred forty-nine".