1005913 has 2 divisors, whose sum is σ = 1005914. Its totient is φ = 1005912.

The previous prime is 1005911. The next prime is 1005931. The reversal of 1005913 is 3195001.

Together with next prime (1005931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870489 + 135424 = 933^2 + 368^2 .

It is an emirp because it is prime and its reverse (3195001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1005913 - 2¹ = 1005911 is a prime.

Together with 1005911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1005911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502956 + 502957.

It is an arithmetic number, because the mean of its divisors is an integer number (502957).

2^1005913 is an apocalyptic number.

It is an amenable number.

1005913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005913 is an equidigital number, since it uses as much as digits as its factorization.

1005913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1005913 is about 1002.9521424275. The cubic root of 1005913 is about 100.1967127871.

The spelling of 1005913 in words is "one million, five thousand, nine hundred thirteen".