1513125347 has 4 divisors (see below), whose sum is σ = 1513225560. Its totient is φ = 1513025136.

The previous prime is 1513125343. The next prime is 1513125353. The reversal of 1513125347 is 7435213151.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7435213151 = 23 ⋅323270137.

It is a cyclic number.

It is not a de Polignac number, because 1513125347 - 2² = 1513125343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513125343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22322 + ... + 59367.

It is an arithmetic number, because the mean of its divisors is an integer number (378306390).

Almost surely, 2^1513125347 is an apocalyptic number.

1513125347 is a deficient number, since it is larger than the sum of its proper divisors (100213).

1513125347 is an equidigital number, since it uses as much as digits as its factorization.

1513125347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100212.

The product of its digits is 12600, while the sum is 32.

The square root of 1513125347 is about 38898.9118999491. The cubic root of 1513125347 is about 1148.0433892292.

Adding to 1513125347 its reverse (7435213151), we get a palindrome (8948338498).

The spelling of 1513125347 in words is "one billion, five hundred thirteen million, one hundred twenty-five thousand, three hundred forty-seven".