1814238916 has 72 divisors (see below), whose sum is σ = 3894137856. Its totient is φ = 736323840.

The previous prime is 1814238887. The next prime is 1814238917. The reversal of 1814238916 is 6198324181.

It is not an unprimeable number, because it can be changed into a prime (1814238917) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 282396 + ... + 288748.

It is an arithmetic number, because the mean of its divisors is an integer number (54085248).

Almost surely, 2^1814238916 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 1814238916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1947068928).

1814238916 is an abundant number, since it is smaller than the sum of its proper divisors (2079898940).

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

1814238916 is a wasteful number, since it uses less digits than its factorization.

1814238916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449 (or 6440 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 1814238916 is about 42593.8835515148. The cubic root of 1814238916 is about 1219.6395324908.

The spelling of 1814238916 in words is "one billion, eight hundred fourteen million, two hundred thirty-eight thousand, nine hundred sixteen".