1513122005 has 4 divisors (see below), whose sum is σ = 1815746412. Its totient is φ = 1210497600.

The previous prime is 1513121971. The next prime is 1513122029. The reversal of 1513122005 is 5002213151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5002213151 = 13 ⋅384785627.

It can be written as a sum of positive squares in 2 ways, for example, as 158734801 + 1354387204 = 12599^2 + 36802^2 .

It is not a de Polignac number, because 1513122005 - 2¹⁰ = 1513120981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151312196 + ... + 151312205.

It is an arithmetic number, because the mean of its divisors is an integer number (453936603).

Almost surely, 2^1513122005 is an apocalyptic number.

It is an amenable number.

1513122005 is a deficient number, since it is larger than the sum of its proper divisors (302624407).

1513122005 is an equidigital number, since it uses as much as digits as its factorization.

1513122005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302624406.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1513122005 is about 38898.8689424256. The cubic root of 1513122005 is about 1148.0425440109.

Adding to 1513122005 its reverse (5002213151), we get a palindrome (6515335156).

The spelling of 1513122005 in words is "one billion, five hundred thirteen million, one hundred twenty-two thousand, five".