1011060991 has 2 divisors, whose sum is σ = 1011060992. Its totient is φ = 1011060990.

The previous prime is 1011060989. The next prime is 1011061033. The reversal of 1011060991 is 1990601101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011060991 - 2¹ = 1011060989 is a prime.

Together with 1011060989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011060961) 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, 505530495 + 505530496.

It is an arithmetic number, because the mean of its divisors is an integer number (505530496).

Almost surely, 2^1011060991 is an apocalyptic number.

1011060991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011060991 is an equidigital number, since it uses as much as digits as its factorization.

1011060991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1011060991 is about 31797.1852685108. The cubic root of 1011060991 is about 1003.6734859768.

The spelling of 1011060991 in words is "one billion, eleven million, sixty thousand, nine hundred ninety-one".