1304135545 has 4 divisors (see below), whose sum is σ = 1564962660. Its totient is φ = 1043308432.

The previous prime is 1304135513. The next prime is 1304135549. The reversal of 1304135545 is 5455314031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5455314031 = 599 ⋅9107369.

It can be written as a sum of positive squares in 2 ways, for example, as 849081321 + 455054224 = 29139^2 + 21332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304135545 - 2⁵ = 1304135513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1304135549) 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 3 ways as a sum of consecutive naturals, for example, 130413550 + ... + 130413559.

It is an arithmetic number, because the mean of its divisors is an integer number (391240665).

Almost surely, 2^1304135545 is an apocalyptic number.

It is an amenable number.

1304135545 is a deficient number, since it is larger than the sum of its proper divisors (260827115).

1304135545 is an equidigital number, since it uses as much as digits as its factorization.

1304135545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260827114.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 1304135545 is about 36112.8169075745. The cubic root of 1304135545 is about 1092.5489668351.

Adding to 1304135545 its reverse (5455314031), we get a palindrome (6759449576).

The spelling of 1304135545 in words is "one billion, three hundred four million, one hundred thirty-five thousand, five hundred forty-five".