1812126439827 has 48 divisors (see below), whose sum is σ = 3068567079552. Its totient is φ = 1018227260160.

The previous prime is 1812126439769. The next prime is 1812126439873. The reversal of 1812126439827 is 7289346212181.

1812126439827 is a `hidden beast` number, since 1 + 8 + 1 + 2 + 126 + 439 + 82 + 7 = 666.

It is not a de Polignac number, because 1812126439827 - 2²⁷ = 1811992222099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1812126439027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7922493 + ... + 8148014.

It is an arithmetic number, because the mean of its divisors is an integer number (63928480824).

Almost surely, 2^{1812126439827} is an apocalyptic number.

1812126439827 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1812126439827 is a deficient number, since it is larger than the sum of its proper divisors (1256440639725).

1812126439827 is a wasteful number, since it uses less digits than its factorization.

1812126439827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16070608 (or 16070605 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 1812126439827 in words is "one trillion, eight hundred twelve billion, one hundred twenty-six million, four hundred thirty-nine thousand, eight hundred twenty-seven".