1323938866 has 4 divisors (see below), whose sum is σ = 1985908302. Its totient is φ = 661969432.

The previous prime is 1323938839. The next prime is 1323938879. The reversal of 1323938866 is 6688393231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6688393231 = 13 ⋅514491787.

It can be written as a sum of positive squares in only one way, i.e., 997233241 + 326705625 = 31579^2 + 18075^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330984715 + ... + 330984718.

Almost surely, 2^1323938866 is an apocalyptic number.

1323938866 is a deficient number, since it is larger than the sum of its proper divisors (661969436).

1323938866 is an equidigital number, since it uses as much as digits as its factorization.

1323938866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661969435.

The product of its digits is 1119744, while the sum is 49.

The square root of 1323938866 is about 36385.9707304890. The cubic root of 1323938866 is about 1098.0513339702.

The spelling of 1323938866 in words is "one billion, three hundred twenty-three million, nine hundred thirty-eight thousand, eight hundred sixty-six".