2658223738 has 4 divisors (see below), whose sum is σ = 3987335610. Its totient is φ = 1329111868.

The previous prime is 2658223661. The next prime is 2658223753. The reversal of 2658223738 is 8373228562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2181543849 + 476679889 = 46707^2 + 21833^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664555933 + ... + 664555936.

Almost surely, 2^2658223738 is an apocalyptic number.

2658223738 is a deficient number, since it is larger than the sum of its proper divisors (1329111872).

2658223738 is a wasteful number, since it uses less digits than its factorization.

2658223738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329111871.

The product of its digits is 967680, while the sum is 46.

The square root of 2658223738 is about 51557.9648357070. The cubic root of 2658223738 is about 1385.2575015057.

The spelling of 2658223738 in words is "two billion, six hundred fifty-eight million, two hundred twenty-three thousand, seven hundred thirty-eight".