1000505113 has 4 divisors (see below), whose sum is σ = 1000861108. Its totient is φ = 1000149120.

The previous prime is 1000505101. The next prime is 1000505117. The reversal of 1000505113 is 3115050001.

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 149499529 + 851005584 = 12227^2 + 29172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000505113 - 2⁵ = 1000505081 is a prime.

It is a super-2 number, since 2×1000505113² = 2002020962278285538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000505117) 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, 173748 + ... + 179413.

It is an arithmetic number, because the mean of its divisors is an integer number (250215277).

Almost surely, 2^1000505113 is an apocalyptic number.

It is an amenable number.

1000505113 is a deficient number, since it is larger than the sum of its proper divisors (355995).

1000505113 is an equidigital number, since it uses as much as digits as its factorization.

1000505113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355994.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 1000505113 is about 31630.7621311912. The cubic root of 1000505113 is about 1000.1683426592.

Adding to 1000505113 its reverse (3115050001), we get a palindrome (4115555114).

The spelling of 1000505113 in words is "one billion, five hundred five thousand, one hundred thirteen".