1837847278081 has 2 divisors, whose sum is σ = 1837847278082. Its totient is φ = 1837847278080.

The previous prime is 1837847278073. The next prime is 1837847278087. The reversal of 1837847278081 is 1808727487381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1394664159681 + 443183118400 = 1180959^2 + 665720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1837847278081 - 2³ = 1837847278073 is a prime.

It is a super-2 number, since 2×1837847278081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1837847278087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918923639040 + 918923639041.

It is an arithmetic number, because the mean of its divisors is an integer number (918923639041).

Almost surely, 2^{1837847278081} is an apocalyptic number.

It is an amenable number.

1837847278081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1837847278081 is an equidigital number, since it uses as much as digits as its factorization.

1837847278081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33718272, while the sum is 64.

The spelling of 1837847278081 in words is "one trillion, eight hundred thirty-seven billion, eight hundred forty-seven million, two hundred seventy-eight thousand, eighty-one".