1818209088 has 42 divisors (see below), whose sum is σ = 5211569714. Its totient is φ = 606069504.

The previous prime is 1818209069. The next prime is 1818209093. The reversal of 1818209088 is 8809028181.

1818209088 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1780164864 + 38044224 = 42192^2 + 6168^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1577731 + ... + 1578882.

Almost surely, 2^1818209088 is an apocalyptic number.

1818209088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1818209088 is an abundant number, since it is smaller than the sum of its proper divisors (3393360626).

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

1818209088 is a wasteful number, since it uses less digits than its factorization.

1818209088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156631 (or 3156618 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The square root of 1818209088 is about 42640.4630368855. The cubic root of 1818209088 is about 1220.5285464011.

The spelling of 1818209088 in words is "one billion, eight hundred eighteen million, two hundred nine thousand, eighty-eight".