1223336638 has 8 divisors (see below), whose sum is σ = 1898281080. Its totient is φ = 590576280.

The previous prime is 1223336599. The next prime is 1223336669. The reversal of 1223336638 is 8366333221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1223336597 and 1223336606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10545948 + ... + 10546063.

It is an arithmetic number, because the mean of its divisors is an integer number (237285135).

Almost surely, 2^1223336638 is an apocalyptic number.

1223336638 is a deficient number, since it is larger than the sum of its proper divisors (674944442).

1223336638 is a wasteful number, since it uses less digits than its factorization.

1223336638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21092042.

The product of its digits is 93312, while the sum is 37.

The square root of 1223336638 is about 34976.2296138392. The cubic root of 1223336638 is about 1069.5029682717.

Adding to 1223336638 its reverse (8366333221), we get a palindrome (9589669859).

The spelling of 1223336638 in words is "one billion, two hundred twenty-three million, three hundred thirty-six thousand, six hundred thirty-eight".