1008726013 has 4 divisors (see below), whose sum is σ = 1010102908. Its totient is φ = 1007349120.

The previous prime is 1008725999. The next prime is 1008726067. The reversal of 1008726013 is 3106278001.

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 735385924 + 273340089 = 27118^2 + 16533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1008726013 - 2⁵ = 1008725981 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 (1008726113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687348 + ... + 688813.

It is an arithmetic number, because the mean of its divisors is an integer number (252525727).

Almost surely, 2^1008726013 is an apocalyptic number.

It is an amenable number.

1008726013 is a deficient number, since it is larger than the sum of its proper divisors (1376895).

1008726013 is an equidigital number, since it uses as much as digits as its factorization.

1008726013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376894.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1008726013 is about 31760.4473047846. The cubic root of 1008726013 is about 1002.9002514100.

It can be divided in two parts, 10087 and 26013, that added together give a square (36100 = 190²).

The spelling of 1008726013 in words is "one billion, eight million, seven hundred twenty-six thousand, thirteen".