1006326491 has 2 divisors, whose sum is σ = 1006326492. Its totient is φ = 1006326490.

The previous prime is 1006326467. The next prime is 1006326499. The reversal of 1006326491 is 1946236001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006326491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1006326499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503163245 + 503163246.

It is an arithmetic number, because the mean of its divisors is an integer number (503163246).

Almost surely, 2^1006326491 is an apocalyptic number.

1006326491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006326491 is an equidigital number, since it uses as much as digits as its factorization.

1006326491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1006326491 is about 31722.6494952739. The cubic root of 1006326491 is about 1002.1043987329.

The spelling of 1006326491 in words is "one billion, six million, three hundred twenty-six thousand, four hundred ninety-one".