1836825155681 has 2 divisors, whose sum is σ = 1836825155682. Its totient is φ = 1836825155680.

The previous prime is 1836825155653. The next prime is 1836825155719. The reversal of 1836825155681 is 1865515286381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1745041000000 + 91784155681 = 1321000^2 + 302959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1836825155681 - 2¹⁸ = 1836824893537 is a prime.

It is a super-2 number, since 2×1836825155681² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1836825155681.

It is not a weakly prime, because it can be changed into another prime (1836125155681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918412577840 + 918412577841.

It is an arithmetic number, because the mean of its divisors is an integer number (918412577841).

Almost surely, 2^{1836825155681} is an apocalyptic number.

It is an amenable number.

1836825155681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836825155681 is an equidigital number, since it uses as much as digits as its factorization.

1836825155681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824000, while the sum is 59.

The spelling of 1836825155681 in words is "one trillion, eight hundred thirty-six billion, eight hundred twenty-five million, one hundred fifty-five thousand, six hundred eighty-one".