1814227668 has 36 divisors (see below), whose sum is σ = 5002871328. Its totient is φ = 549765840.

The previous prime is 1814227661. The next prime is 1814227669. The reversal of 1814227668 is 8667224181.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814227661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2290296 + ... + 2291087.

It is an arithmetic number, because the mean of its divisors is an integer number (138968648).

Almost surely, 2^1814227668 is an apocalyptic number.

1814227668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1814227668 is an abundant number, since it is smaller than the sum of its proper divisors (3188643660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1814227668 is a wasteful number, since it uses less digits than its factorization.

1814227668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581404 (or 4581399 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1814227668 is about 42593.7515135730. The cubic root of 1814227668 is about 1219.6370119603.

The spelling of 1814227668 in words is "one billion, eight hundred fourteen million, two hundred twenty-seven thousand, six hundred sixty-eight".