1000539813 has 32 divisors (see below), whose sum is σ = 1713309696. Its totient is φ = 504808128.

The previous prime is 1000539797. The next prime is 1000539823. The reversal of 1000539813 is 3189350001.

It is a happy number.

1000539813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000539813 - 2⁴ = 1000539797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000539823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73395 + ... + 85952.

It is an arithmetic number, because the mean of its divisors is an integer number (53540928).

Almost surely, 2^1000539813 is an apocalyptic number.

1000539813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1000539813 is a deficient number, since it is larger than the sum of its proper divisors (712769883).

1000539813 is a wasteful number, since it uses less digits than its factorization.

1000539813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159393.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1000539813 is about 31631.3106430954. The cubic root of 1000539813 is about 1000.1799052988.

Adding to 1000539813 its reverse (3189350001), we get a palindrome (4189889814).

The spelling of 1000539813 in words is "one billion, five hundred thirty-nine thousand, eight hundred thirteen".