1513123147 has 2 divisors, whose sum is σ = 1513123148. Its totient is φ = 1513123146.

The previous prime is 1513123141. The next prime is 1513123181. The reversal of 1513123147 is 7413213151.

It is a weak prime.

It is an emirp because it is prime and its reverse (7413213151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1513123147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1513123141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756561573 + 756561574.

It is an arithmetic number, because the mean of its divisors is an integer number (756561574).

Almost surely, 2^1513123147 is an apocalyptic number.

1513123147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513123147 is an equidigital number, since it uses as much as digits as its factorization.

1513123147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 1513123147 is about 38898.8836215128. The cubic root of 1513123147 is about 1148.0428328319.

Adding to 1513123147 its reverse (7413213151), we get a palindrome (8926336298).

The spelling of 1513123147 in words is "one billion, five hundred thirteen million, one hundred twenty-three thousand, one hundred forty-seven".