1816231896 has 80 divisors (see below), whose sum is σ = 5148574200. Its totient is φ = 598098816.

The previous prime is 1816231891. The next prime is 1816231927. The reversal of 1816231896 is 6981326181.

1816231896 is a `hidden beast` number, since 1 + 8 + 1 + 623 + 18 + 9 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816231891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36900 + ... + 70668.

Almost surely, 2^1816231896 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 1816231896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2574287100).

1816231896 is an abundant number, since it is smaller than the sum of its proper divisors (3332342304).

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

1816231896 is a wasteful number, since it uses less digits than its factorization.

1816231896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33870 (or 33857 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1816231896 is about 42617.2722731054. The cubic root of 1816231896 is about 1220.0859690382.

The spelling of 1816231896 in words is "one billion, eight hundred sixteen million, two hundred thirty-one thousand, eight hundred ninety-six".