1000008481 has 4 divisors (see below), whose sum is σ = 1000148500. Its totient is φ = 999868464.

The previous prime is 1000008439. The next prime is 1000008487. The reversal of 1000008481 is 1848000001.

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 691690000 + 308318481 = 26300^2 + 17559^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000008481 - 2¹³ = 1000000289 is a prime.

It is a super-2 number, since 2×1000008481² = 2000033924143854722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000008487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58686 + ... + 73783.

It is an arithmetic number, because the mean of its divisors is an integer number (250037125).

Almost surely, 2^1000008481 is an apocalyptic number.

It is an amenable number.

1000008481 is a deficient number, since it is larger than the sum of its proper divisors (140019).

1000008481 is an equidigital number, since it uses as much as digits as its factorization.

1000008481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140018.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1000008481 is about 31622.9106977837. The cubic root of 1000008481 is about 1000.0028269920.

Adding to 1000008481 its reverse (1848000001), we get a palindrome (2848008482).

The spelling of 1000008481 in words is "one billion, eight thousand, four hundred eighty-one".