1513630243 has 2 divisors, whose sum is σ = 1513630244. Its totient is φ = 1513630242.

The previous prime is 1513630133. The next prime is 1513630289. The reversal of 1513630243 is 3420363151.

It is a strong prime.

It is an emirp because it is prime and its reverse (3420363151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1513630243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1513630543) 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 as a sum of consecutive naturals, namely, 756815121 + 756815122.

It is an arithmetic number, because the mean of its divisors is an integer number (756815122).

Almost surely, 2^1513630243 is an apocalyptic number.

1513630243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513630243 is an equidigital number, since it uses as much as digits as its factorization.

1513630243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1513630243 is about 38905.4012060022. The cubic root of 1513630243 is about 1148.1710671414.

Adding to 1513630243 its reverse (3420363151), we get a palindrome (4933993394).

The spelling of 1513630243 in words is "one billion, five hundred thirteen million, six hundred thirty thousand, two hundred forty-three".