1320045547 has 8 divisors (see below), whose sum is σ = 1332653616. Its totient is φ = 1307453952.

The previous prime is 1320045541. The next prime is 1320045589. The reversal of 1320045547 is 7455400231.

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 1320045547 - 2¹⁵ = 1320012779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320045541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207843 + ... + 214099.

It is an arithmetic number, because the mean of its divisors is an integer number (166581702).

Almost surely, 2^1320045547 is an apocalyptic number.

1320045547 is a deficient number, since it is larger than the sum of its proper divisors (12608069).

1320045547 is a wasteful number, since it uses less digits than its factorization.

1320045547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 1320045547 is about 36332.4310637205. The cubic root of 1320045547 is about 1096.9739273356.

Adding to 1320045547 its reverse (7455400231), we get a palindrome (8775445778).

The spelling of 1320045547 in words is "one billion, three hundred twenty million, forty-five thousand, five hundred forty-seven".