1303530145 has 16 divisors (see below), whose sum is σ = 1583966160. Its totient is φ = 1029740544.

The previous prime is 1303530143. The next prime is 1303530149. The reversal of 1303530145 is 5410353031.

It can be written as a sum of positive squares in 8 ways, for example, as 656794384 + 646735761 = 25628^2 + 25431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303530145 - 2¹ = 1303530143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1303530143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152341 + ... + 160669.

It is an arithmetic number, because the mean of its divisors is an integer number (98997885).

Almost surely, 2^1303530145 is an apocalyptic number.

It is an amenable number.

1303530145 is a deficient number, since it is larger than the sum of its proper divisors (280436015).

1303530145 is a wasteful number, since it uses less digits than its factorization.

1303530145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1303530145 is about 36104.4338689862. The cubic root of 1303530145 is about 1092.3798812616.

Adding to 1303530145 its reverse (5410353031), we get a palindrome (6713883176).

The spelling of 1303530145 in words is "one billion, three hundred three million, five hundred thirty thousand, one hundred forty-five".