1836398644011 has 8 divisors (see below), whose sum is σ = 2720590583760. Its totient is φ = 1224265762656.

The previous prime is 1836398643997. The next prime is 1836398644019. The reversal of 1836398644011 is 1104468936381.

1836398644011 is a `hidden beast` number, since 1 + 83 + 6 + 39 + 86 + 440 + 11 = 666.

It is not a de Polignac number, because 1836398644011 - 2⁵ = 1836398643979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1836398644019) 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, 34007382270 + ... + 34007382323.

It is an arithmetic number, because the mean of its divisors is an integer number (340073822970).

Almost surely, 2^{1836398644011} is an apocalyptic number.

1836398644011 is a deficient number, since it is larger than the sum of its proper divisors (884191939749).

1836398644011 is an equidigital number, since it uses as much as digits as its factorization.

1836398644011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68014764602 (or 68014764596 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 1836398644011 in words is "one trillion, eight hundred thirty-six billion, three hundred ninety-eight million, six hundred forty-four thousand, eleven".