13866227858 has 24 divisors (see below), whose sum is σ = 24289341372. Its totient is φ = 5919535104.

The previous prime is 13866227743. The next prime is 13866227897. The reversal of 13866227858 is 85872266831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12861147649 + 1005080209 = 113407^2 + 31703^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250091 + ... + 300462.

Almost surely, 2^13866227858 is an apocalyptic number.

13866227858 is a deficient number, since it is larger than the sum of its proper divisors (10423113514).

13866227858 is a wasteful number, since it uses less digits than its factorization.

13866227858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550826 (or 550819 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 56.

The spelling of 13866227858 in words is "thirteen billion, eight hundred sixty-six million, two hundred twenty-seven thousand, eight hundred fifty-eight".