1055991163 has 2 divisors, whose sum is σ = 1055991164. Its totient is φ = 1055991162.

The previous prime is 1055991149. The next prime is 1055991197. The reversal of 1055991163 is 3611995501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055991163 is a prime.

It is a super-2 number, since 2×1055991163² = 2230234672668185138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055991103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527995581 + 527995582.

It is an arithmetic number, because the mean of its divisors is an integer number (527995582).

Almost surely, 2^1055991163 is an apocalyptic number.

1055991163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055991163 is an equidigital number, since it uses as much as digits as its factorization.

1055991163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 1055991163 is about 32496.0176483212. The cubic root of 1055991163 is about 1018.3258333399.

The spelling of 1055991163 in words is "one billion, fifty-five million, nine hundred ninety-one thousand, one hundred sixty-three".