1304344645 has 8 divisors (see below), whose sum is σ = 1567614456. Its totient is φ = 1041875136.

The previous prime is 1304344637. The next prime is 1304344667. The reversal of 1304344645 is 5464434031.

It can be written as a sum of positive squares in 4 ways, for example, as 30283009 + 1274061636 = 5503^2 + 35694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304344645 - 2³ = 1304344637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304344645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196482 + ... + 203011.

It is an arithmetic number, because the mean of its divisors is an integer number (195951807).

Almost surely, 2^1304344645 is an apocalyptic number.

It is an amenable number.

1304344645 is a deficient number, since it is larger than the sum of its proper divisors (263269811).

1304344645 is an equidigital number, since it uses as much as digits as its factorization.

1304344645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400151.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 1304344645 is about 36115.7118855492. The cubic root of 1304344645 is about 1092.6073553928.

Adding to 1304344645 its reverse (5464434031), we get a palindrome (6768778676).

The spelling of 1304344645 in words is "one billion, three hundred four million, three hundred forty-four thousand, six hundred forty-five".