1300320045 has 24 divisors (see below), whose sum is σ = 2314806936. Its totient is φ = 674759808.

The previous prime is 1300320029. The next prime is 1300320071. The reversal of 1300320045 is 5400230031.

1300320045 is a `hidden beast` number, since 1 + 300 + 320 + 0 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 266440329 + 1033879716 = 16323^2 + 32154^2 .

It is not a de Polignac number, because 1300320045 - 2⁴ = 1300320029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388822 + ... + 392151.

It is an arithmetic number, because the mean of its divisors is an integer number (96450289).

Almost surely, 2^1300320045 is an apocalyptic number.

1300320045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1300320045 is a deficient number, since it is larger than the sum of its proper divisors (1014486891).

1300320045 is a wasteful number, since it uses less digits than its factorization.

1300320045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781021 (or 781018 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1300320045 is about 36059.9507071211. The cubic root of 1300320045 is about 1091.4824384906.

Adding to 1300320045 its reverse (5400230031), we get a palindrome (6700550076).

The spelling of 1300320045 in words is "one billion, three hundred million, three hundred twenty thousand, forty-five".