11189155 has 16 divisors (see below), whose sum is σ = 14126400. Its totient is φ = 8491648.

The previous prime is 11189131. The next prime is 11189183. The reversal of 11189155 is 55198111.

It is a cyclic number.

It is not a de Polignac number, because 11189155 - 2⁷ = 11189027 is a prime.

It is a super-2 number, since 2×11189155² = 250394379228050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16809 + ... + 17461.

It is an arithmetic number, because the mean of its divisors is an integer number (882900).

Almost surely, 2^11189155 is an apocalyptic number.

11189155 is a deficient number, since it is larger than the sum of its proper divisors (2937245).

11189155 is a wasteful number, since it uses less digits than its factorization.

11189155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830.

The product of its digits is 1800, while the sum is 31.

The square root of 11189155 is about 3345.0194319316. The cubic root of 11189155 is about 223.6655497284.

The spelling of 11189155 in words is "eleven million, one hundred eighty-nine thousand, one hundred fifty-five".