1323558145 has 48 divisors (see below), whose sum is σ = 2069159040. Its totient is φ = 793608192.

The previous prime is 1323558127. The next prime is 1323558157. The reversal of 1323558145 is 5418553231.

It is not a de Polignac number, because 1323558145 - 2²⁹ = 786687233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106497 + ... + 118273.

It is an arithmetic number, because the mean of its divisors is an integer number (43107480).

Almost surely, 2^1323558145 is an apocalyptic number.

It is an amenable number.

1323558145 is a deficient number, since it is larger than the sum of its proper divisors (745600895).

1323558145 is a wasteful number, since it uses less digits than its factorization.

1323558145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11834 (or 11821 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 1323558145 is about 36380.7386538536. The cubic root of 1323558145 is about 1097.9460694721.

The spelling of 1323558145 in words is "one billion, three hundred twenty-three million, five hundred fifty-eight thousand, one hundred forty-five".