1816217088 has 160 divisors (see below), whose sum is σ = 5709158400. Its totient is φ = 502087680.

The previous prime is 1816217077. The next prime is 1816217089. The reversal of 1816217088 is 8807126181.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816217089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330588 + ... + 336036.

It is an arithmetic number, because the mean of its divisors is an integer number (35682240).

Almost surely, 2^1816217088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816217088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2854579200).

1816217088 is an abundant number, since it is smaller than the sum of its proper divisors (3892941312).

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

1816217088 is an equidigital number, since it uses as much as digits as its factorization.

1816217088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 42.

The square root of 1816217088 is about 42617.0985403746. The cubic root of 1816217088 is about 1220.0826531837.

The spelling of 1816217088 in words is "one billion, eight hundred sixteen million, two hundred seventeen thousand, eighty-eight".