2238727949 has 4 divisors (see below), whose sum is σ = 2244964320. Its totient is φ = 2232491580.

The previous prime is 2238727913. The next prime is 2238727951. The reversal of 2238727949 is 9497278322.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2238727949 is a prime.

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 2238727949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238727979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3117647 + ... + 3118364.

It is an arithmetic number, because the mean of its divisors is an integer number (561241080).

Almost surely, 2^2238727949 is an apocalyptic number.

It is an amenable number.

2238727949 is a deficient number, since it is larger than the sum of its proper divisors (6236371).

2238727949 is an equidigital number, since it uses as much as digits as its factorization.

2238727949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236370.

The product of its digits is 3048192, while the sum is 53.

The square root of 2238727949 is about 47315.1978649567. The cubic root of 2238727949 is about 1308.1788007979.

The spelling of 2238727949 in words is "two billion, two hundred thirty-eight million, seven hundred twenty-seven thousand, nine hundred forty-nine".