11918422 has 4 divisors (see below), whose sum is σ = 17877636. Its totient is φ = 5959210.

The previous prime is 11918419. The next prime is 11918437. The reversal of 11918422 is 22481911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22481911 = 53 ⋅424187.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2979604 + ... + 2979607.

It is an arithmetic number, because the mean of its divisors is an integer number (4469409).

Almost surely, 2^11918422 is an apocalyptic number.

11918422 is a deficient number, since it is larger than the sum of its proper divisors (5959214).

11918422 is an equidigital number, since it uses as much as digits as its factorization.

11918422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959213.

The product of its digits is 1152, while the sum is 28.

The square root of 11918422 is about 3452.3067650486. The cubic root of 11918422 is about 228.4228712133.

The spelling of 11918422 in words is "eleven million, nine hundred eighteen thousand, four hundred twenty-two".