1323378929 has 2 divisors, whose sum is σ = 1323378930. Its totient is φ = 1323378928.

The previous prime is 1323378913. The next prime is 1323378941. The reversal of 1323378929 is 9298733231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1285581025 + 37797904 = 35855^2 + 6148^2 .

It is an emirp because it is prime and its reverse (9298733231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323378929 - 2⁴ = 1323378913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323378029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661689464 + 661689465.

It is an arithmetic number, because the mean of its divisors is an integer number (661689465).

Almost surely, 2^1323378929 is an apocalyptic number.

It is an amenable number.

1323378929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323378929 is an equidigital number, since it uses as much as digits as its factorization.

1323378929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 1323378929 is about 36378.2755088803. The cubic root of 1323378929 is about 1097.8965115474.

The spelling of 1323378929 in words is "one billion, three hundred twenty-three million, three hundred seventy-eight thousand, nine hundred twenty-nine".