1163000491 has 2 divisors, whose sum is σ = 1163000492. Its totient is φ = 1163000490.

The previous prime is 1163000479. The next prime is 1163000513. The reversal of 1163000491 is 1940003611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1163000491 - 2¹¹ = 1162998443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163000591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581500245 + 581500246.

It is an arithmetic number, because the mean of its divisors is an integer number (581500246).

Almost surely, 2^1163000491 is an apocalyptic number.

1163000491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163000491 is an equidigital number, since it uses as much as digits as its factorization.

1163000491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1163000491 is about 34102.7930087845. The cubic root of 1163000491 is about 1051.6227337695.

The spelling of 1163000491 in words is "one billion, one hundred sixty-three million, four hundred ninety-one", and thus it is an aban number.