2239727638 has 16 divisors (see below), whose sum is σ = 3569469120. Its totient is φ = 1051006536.

The previous prime is 2239727591. The next prime is 2239727647. The reversal of 2239727638 is 8367279322.

It is a junction number, because it is equal to n+sod(n) for n = 2239727591 and 2239727600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271356 + ... + 279487.

It is an arithmetic number, because the mean of its divisors is an integer number (223091820).

Almost surely, 2^2239727638 is an apocalyptic number.

2239727638 is a deficient number, since it is larger than the sum of its proper divisors (1329741482).

2239727638 is a wasteful number, since it uses less digits than its factorization.

2239727638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550971.

The product of its digits is 1524096, while the sum is 49.

The square root of 2239727638 is about 47325.7608285382. The cubic root of 2239727638 is about 1308.3734913211.

The spelling of 2239727638 in words is "two billion, two hundred thirty-nine million, seven hundred twenty-seven thousand, six hundred thirty-eight".