1810812012 has 24 divisors (see below), whose sum is σ = 4283109936. Its totient is φ = 595335168.

The previous prime is 1810811963. The next prime is 1810812019. The reversal of 1810812012 is 2102180181.

It is not an unprimeable number, because it can be changed into a prime (1810812019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032693 + ... + 1034444.

It is an arithmetic number, because the mean of its divisors is an integer number (178462914).

Almost surely, 2^1810812012 is an apocalyptic number.

1810812012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1810812012 is an abundant number, since it is smaller than the sum of its proper divisors (2472297924).

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

1810812012 is a wasteful number, since it uses less digits than its factorization.

1810812012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067217 (or 2067215 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

The square root of 1810812012 is about 42553.6368833499. The cubic root of 1810812012 is about 1218.8711254343.

Adding to 1810812012 its reverse (2102180181), we get a palindrome (3912992193).

The spelling of 1810812012 in words is "one billion, eight hundred ten million, eight hundred twelve thousand, twelve".