1005361013 has 4 divisors (see below), whose sum is σ = 1006444140. Its totient is φ = 1004277888.

The previous prime is 1005360997. The next prime is 1005361039. The reversal of 1005361013 is 3101635001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30547729 + 974813284 = 5527^2 + 31222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005361013 - 2⁴ = 1005360997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005361043) 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, 540170 + ... + 542027.

It is an arithmetic number, because the mean of its divisors is an integer number (251611035).

Almost surely, 2^1005361013 is an apocalyptic number.

It is an amenable number.

1005361013 is a deficient number, since it is larger than the sum of its proper divisors (1083127).

1005361013 is an equidigital number, since it uses as much as digits as its factorization.

1005361013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083126.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1005361013 is about 31707.4283567747. The cubic root of 1005361013 is about 1001.7838204260.

Adding to 1005361013 its reverse (3101635001), we get a palindrome (4106996014).

The spelling of 1005361013 in words is "one billion, five million, three hundred sixty-one thousand, thirteen".