1812336855538 has 16 divisors (see below), whose sum is σ = 3009905445024. Its totient is φ = 811494113760.

The previous prime is 1812336855503. The next prime is 1812336855551. The reversal of 1812336855538 is 8355586332181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614766795 + ... + 614769742.

It is an arithmetic number, because the mean of its divisors is an integer number (188119090314).

Almost surely, 2^{1812336855538} is an apocalyptic number.

1812336855538 is a deficient number, since it is larger than the sum of its proper divisors (1197568589486).

1812336855538 is a wasteful number, since it uses less digits than its factorization.

1812336855538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229536617.

The product of its digits is 20736000, while the sum is 58.

The spelling of 1812336855538 in words is "one trillion, eight hundred twelve billion, three hundred thirty-six million, eight hundred fifty-five thousand, five hundred thirty-eight".