10691189 has 4 divisors (see below), whose sum is σ = 10709580. Its totient is φ = 10672800.

The previous prime is 10691183. The next prime is 10691237. The reversal of 10691189 is 98119601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98119601 = 41 ⋅2393161.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 819025 = 3142^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 10691189 - 2¹² = 10687093 is a prime.

It is a super-2 number, since 2×10691189² = 228603044467442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10691183) 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 in 3 ways as a sum of consecutive naturals, for example, 8294 + ... + 9495.

It is an arithmetic number, because the mean of its divisors is an integer number (2677395).

Almost surely, 2^10691189 is an apocalyptic number.

It is an amenable number.

10691189 is a deficient number, since it is larger than the sum of its proper divisors (18391).

10691189 is an equidigital number, since it uses as much as digits as its factorization.

10691189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18390.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 10691189 is about 3269.7383687384. The cubic root of 10691189 is about 220.2970436552.

The spelling of 10691189 in words is "ten million, six hundred ninety-one thousand, one hundred eighty-nine".