11189691 has 8 divisors (see below), whose sum is σ = 16577360. Its totient is φ = 7459776.

The previous prime is 11189687. The next prime is 11189693. The reversal of 11189691 is 19698111.

It is not a de Polignac number, because 11189691 - 2² = 11189687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11189693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207190 + ... + 207243.

It is an arithmetic number, because the mean of its divisors is an integer number (2072170).

Almost surely, 2^11189691 is an apocalyptic number.

11189691 is a deficient number, since it is larger than the sum of its proper divisors (5387669).

11189691 is an equidigital number, since it uses as much as digits as its factorization.

11189691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414442 (or 414436 counting only the distinct ones).

The product of its digits is 3888, while the sum is 36.

The square root of 11189691 is about 3345.0995500882. The cubic root of 11189691 is about 223.6691211277.

The spelling of 11189691 in words is "eleven million, one hundred eighty-nine thousand, six hundred ninety-one".