1838727154157 has 2 divisors, whose sum is σ = 1838727154158. Its totient is φ = 1838727154156.

The previous prime is 1838727154153. The next prime is 1838727154213. The reversal of 1838727154157 is 7514517278381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1590350510281 + 248376643876 = 1261091^2 + 498374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838727154157 - 2² = 1838727154153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1838727154096 and 1838727154105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1838727154153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919363577078 + 919363577079.

It is an arithmetic number, because the mean of its divisors is an integer number (919363577079).

Almost surely, 2^{1838727154157} is an apocalyptic number.

It is an amenable number.

1838727154157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838727154157 is an equidigital number, since it uses as much as digits as its factorization.

1838727154157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13171200, while the sum is 59.

The spelling of 1838727154157 in words is "one trillion, eight hundred thirty-eight billion, seven hundred twenty-seven million, one hundred fifty-four thousand, one hundred fifty-seven".