1812815682 has 16 divisors (see below), whose sum is σ = 3631026720. Its totient is φ = 603372672.

The previous prime is 1812815681. The next prime is 1812815731. The reversal of 1812815682 is 2865182181.

It is not an unprimeable number, because it can be changed into a prime (1812815681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220432 + ... + 228507.

It is an arithmetic number, because the mean of its divisors is an integer number (226939170).

Almost surely, 2^1812815682 is an apocalyptic number.

1812815682 is an abundant number, since it is smaller than the sum of its proper divisors (1818211038).

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

1812815682 is a wasteful number, since it uses less digits than its factorization.

1812815682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449617.

The product of its digits is 61440, while the sum is 42.

The square root of 1812815682 is about 42577.1732504637. The cubic root of 1812815682 is about 1219.3205214827.

The spelling of 1812815682 in words is "one billion, eight hundred twelve million, eight hundred fifteen thousand, six hundred eighty-two".