1520410013 has 4 divisors (see below), whose sum is σ = 1520510688. Its totient is φ = 1520309340.

The previous prime is 1520410007. The next prime is 1520410027. The reversal of 1520410013 is 3100140251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1520410013 - 2⁸ = 1520409757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1520409973 and 1520410000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520410033) 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, 22583 + ... + 59588.

It is an arithmetic number, because the mean of its divisors is an integer number (380127672).

Almost surely, 2^1520410013 is an apocalyptic number.

It is an amenable number.

1520410013 is a deficient number, since it is larger than the sum of its proper divisors (100675).

1520410013 is an equidigital number, since it uses as much as digits as its factorization.

1520410013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100674.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1520410013 is about 38992.4353304587. The cubic root of 1520410013 is about 1149.8827890622.

Adding to 1520410013 its reverse (3100140251), we get a palindrome (4620550264).

The spelling of 1520410013 in words is "one billion, five hundred twenty million, four hundred ten thousand, thirteen".