1816835728626 has 12 divisors (see below), whose sum is σ = 3936477412062. Its totient is φ = 605611909536.

The previous prime is 1816835728567. The next prime is 1816835728637. The reversal of 1816835728626 is 6268275386181.

1816835728626 is a `hidden beast` number, since 181 + 6 + 8 + 357 + 2 + 86 + 26 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1035918875601 + 780916853025 = 1017801^2 + 883695^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50467659111 + ... + 50467659146.

Almost surely, 2^{1816835728626} is an apocalyptic number.

1816835728626 is an abundant number, since it is smaller than the sum of its proper divisors (2119641683436).

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

1816835728626 is a wasteful number, since it uses less digits than its factorization.

1816835728626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100935318265 (or 100935318262 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 1816835728626 in words is "one trillion, eight hundred sixteen billion, eight hundred thirty-five million, seven hundred twenty-eight thousand, six hundred twenty-six".