11162891 has 2 divisors, whose sum is σ = 11162892. Its totient is φ = 11162890.

The previous prime is 11162881. The next prime is 11162911. The reversal of 11162891 is 19826111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11162891 - 2¹⁰ = 11161867 is a prime.

It is a super-2 number, since 2×11162891² = 249220270955762, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11162881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5581445 + 5581446.

It is an arithmetic number, because the mean of its divisors is an integer number (5581446).

Almost surely, 2^11162891 is an apocalyptic number.

11162891 is a deficient number, since it is larger than the sum of its proper divisors (1).

11162891 is an equidigital number, since it uses as much as digits as its factorization.

11162891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 29.

The square root of 11162891 is about 3341.0912887857. The cubic root of 11162891 is about 223.4904112651.

The spelling of 11162891 in words is "eleven million, one hundred sixty-two thousand, eight hundred ninety-one".