1320325218 has 32 divisors (see below), whose sum is σ = 2935537920. Its totient is φ = 439886160.

The previous prime is 1320325217. The next prime is 1320325291. The reversal of 1320325218 is 8125230231.

1320325218 is a `hidden beast` number, since 1 + 320 + 325 + 2 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1320325191 and 1320325200.

It is not an unprimeable number, because it can be changed into a prime (1320325217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128823 + ... + 138693.

It is an arithmetic number, because the mean of its divisors is an integer number (91735560).

Almost surely, 2^1320325218 is an apocalyptic number.

1320325218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1320325218 is an abundant number, since it is smaller than the sum of its proper divisors (1615212702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320325218 is a wasteful number, since it uses less digits than its factorization.

1320325218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359 (or 12353 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1320325218 is about 36336.2796389504. The cubic root of 1320325218 is about 1097.0513918676.

Adding to 1320325218 its reverse (8125230231), we get a palindrome (9445555449).

The spelling of 1320325218 in words is "one billion, three hundred twenty million, three hundred twenty-five thousand, two hundred eighteen".