1002401513 has 4 divisors (see below), whose sum is σ = 1002698628. Its totient is φ = 1002104400.

The previous prime is 1002401503. The next prime is 1002401527. The reversal of 1002401513 is 3151042001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3151042001 = 337 ⋅9350273.

It can be written as a sum of positive squares in 2 ways, for example, as 500103769 + 502297744 = 22363^2 + 22412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002401513 - 2¹⁰ = 1002400489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002401491 and 1002401500.

It is not an unprimeable number, because it can be changed into a prime (1002401503) 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, 143438 + ... + 150263.

It is an arithmetic number, because the mean of its divisors is an integer number (250674657).

Almost surely, 2^1002401513 is an apocalyptic number.

It is an amenable number.

1002401513 is a deficient number, since it is larger than the sum of its proper divisors (297115).

1002401513 is an equidigital number, since it uses as much as digits as its factorization.

1002401513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297114.

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

The square root of 1002401513 is about 31660.7250864537. The cubic root of 1002401513 is about 1000.7998643797.

Adding to 1002401513 its reverse (3151042001), we get a palindrome (4153443514).

The spelling of 1002401513 in words is "one billion, two million, four hundred one thousand, five hundred thirteen".