1006304891 has 2 divisors, whose sum is σ = 1006304892. Its totient is φ = 1006304890.

The previous prime is 1006304863. The next prime is 1006304909. The reversal of 1006304891 is 1984036001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006304891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1006304801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503152445 + 503152446.

It is an arithmetic number, because the mean of its divisors is an integer number (503152446).

Almost surely, 2^1006304891 is an apocalyptic number.

1006304891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006304891 is an equidigital number, since it uses as much as digits as its factorization.

1006304891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1006304891 is about 31722.3090426911. The cubic root of 1006304891 is about 1002.0972288895.

The spelling of 1006304891 in words is "one billion, six million, three hundred four thousand, eight hundred ninety-one".