11912818 has 8 divisors (see below), whose sum is σ = 18920412. Its totient is φ = 5606016.

The previous prime is 11912807. The next prime is 11912821. The reversal of 11912818 is 81821911.

It can be written as a sum of positive squares in 2 ways, for example, as 11042329 + 870489 = 3323^2 + 933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11912818² = 283830465402248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11912818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175155 + ... + 175222.

Almost surely, 2^11912818 is an apocalyptic number.

11912818 is a deficient number, since it is larger than the sum of its proper divisors (7007594).

11912818 is a wasteful number, since it uses less digits than its factorization.

11912818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350396.

The product of its digits is 1152, while the sum is 31.

The square root of 11912818 is about 3451.4950383855. The cubic root of 11912818 is about 228.3870643911.

The spelling of 11912818 in words is "eleven million, nine hundred twelve thousand, eight hundred eighteen".