1816001112 has 64 divisors (see below), whose sum is σ = 4805856000. Its totient is φ = 570858624.

The previous prime is 1816001101. The next prime is 1816001113. The reversal of 1816001112 is 2111006181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816001113) 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, 412 + ... + 60267.

It is an arithmetic number, because the mean of its divisors is an integer number (75091500).

Almost surely, 2^1816001112 is an apocalyptic number.

1816001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2402928000).

1816001112 is an abundant number, since it is smaller than the sum of its proper divisors (2989854888).

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

1816001112 is a wasteful number, since it uses less digits than its factorization.

1816001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60760 (or 60756 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 21.

The square root of 1816001112 is about 42614.5645525095. The cubic root of 1816001112 is about 1220.0342891017.

Adding to 1816001112 its reverse (2111006181), we get a palindrome (3927007293).

The spelling of 1816001112 in words is "one billion, eight hundred sixteen million, one thousand, one hundred twelve".