1812808082826 has 96 divisors (see below), whose sum is σ = 4479205506048. Its totient is φ = 524917117440.

The previous prime is 1812808082807. The next prime is 1812808082831. The reversal of 1812808082826 is 6282808082181.

1812808082826 is a `hidden beast` number, since 1 + 8 + 1 + 280 + 80 + 8 + 282 + 6 = 666.

It is a super-3 number, since 3×1812808082826³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 45611775 + ... + 45651501.

It is an arithmetic number, because the mean of its divisors is an integer number (46658390688).

Almost surely, 2^{1812808082826} is an apocalyptic number.

1812808082826 is an abundant number, since it is smaller than the sum of its proper divisors (2666397423222).

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

1812808082826 is a wasteful number, since it uses less digits than its factorization.

1812808082826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51236 (or 51233 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 54.

The spelling of 1812808082826 in words is "one trillion, eight hundred twelve billion, eight hundred eight million, eighty-two thousand, eight hundred twenty-six".