1401530513 has 4 divisors (see below), whose sum is σ = 1401695028. Its totient is φ = 1401366000.

The previous prime is 1401530483. The next prime is 1401530527. The reversal of 1401530513 is 3150351041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 772172944 + 629357569 = 27788^2 + 25087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401530513 - 2⁸ = 1401530257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401530563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68738 + ... + 86763.

It is an arithmetic number, because the mean of its divisors is an integer number (350423757).

Almost surely, 2^1401530513 is an apocalyptic number.

It is an amenable number.

1401530513 is a deficient number, since it is larger than the sum of its proper divisors (164515).

1401530513 is an equidigital number, since it uses as much as digits as its factorization.

1401530513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164514.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1401530513 is about 37437.0206213048. The cubic root of 1401530513 is about 1119.0964526576.

Adding to 1401530513 its reverse (3150351041), we get a palindrome (4551881554).

The spelling of 1401530513 in words is "one billion, four hundred one million, five hundred thirty thousand, five hundred thirteen".