11418871 has 4 divisors (see below), whose sum is σ = 11447200. Its totient is φ = 11390544.

The previous prime is 11418863. The next prime is 11418893. The reversal of 11418871 is 17881411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11418871 - 2³ = 11418863 is a prime.

It is a super-2 number, since 2×11418871² = 260781229829282, 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 (11418851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13551 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (2861800).

Almost surely, 2^11418871 is an apocalyptic number.

11418871 is a deficient number, since it is larger than the sum of its proper divisors (28329).

11418871 is an equidigital number, since it uses as much as digits as its factorization.

11418871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28328.

The product of its digits is 1792, while the sum is 31.

The square root of 11418871 is about 3379.1820016093. The cubic root of 11418871 is about 225.1858283744.

The spelling of 11418871 in words is "eleven million, four hundred eighteen thousand, eight hundred seventy-one".