1006345391 has 2 divisors, whose sum is σ = 1006345392. Its totient is φ = 1006345390.

The previous prime is 1006345367. The next prime is 1006345411. The reversal of 1006345391 is 1935436001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1006345391 - 2¹⁴ = 1006329007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006345331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503172695 + 503172696.

It is an arithmetic number, because the mean of its divisors is an integer number (503172696).

Almost surely, 2^1006345391 is an apocalyptic number.

1006345391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006345391 is an equidigital number, since it uses as much as digits as its factorization.

1006345391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1006345391 is about 31722.9473882866. The cubic root of 1006345391 is about 1002.1106722616.

The spelling of 1006345391 in words is "one billion, six million, three hundred forty-five thousand, three hundred ninety-one".