1223964338 has 4 divisors (see below), whose sum is σ = 1835946510. Its totient is φ = 611982168.

The previous prime is 1223964331. The next prime is 1223964373. The reversal of 1223964338 is 8334693221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8334693221 = 4391 ⋅1898131.

It can be written as a sum of positive squares in only one way, i.e., 1081949449 + 142014889 = 32893^2 + 11917^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1223964295 and 1223964304.

It is not an unprimeable number, because it can be changed into a prime (1223964331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305991083 + ... + 305991086.

Almost surely, 2^1223964338 is an apocalyptic number.

1223964338 is a deficient number, since it is larger than the sum of its proper divisors (611982172).

1223964338 is an equidigital number, since it uses as much as digits as its factorization.

1223964338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611982171.

The product of its digits is 186624, while the sum is 41.

The square root of 1223964338 is about 34985.2017001474. The cubic root of 1223964338 is about 1069.6858593922.

The spelling of 1223964338 in words is "one billion, two hundred twenty-three million, nine hundred sixty-four thousand, three hundred thirty-eight".