1850115370729 has 2 divisors, whose sum is σ = 1850115370730. Its totient is φ = 1850115370728.

The previous prime is 1850115370711. The next prime is 1850115370757. The reversal of 1850115370729 is 9270735110581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012840960000 + 837274410729 = 1006400^2 + 915027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850115370729 - 2²⁷ = 1849981153001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1850115370429) 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, 925057685364 + 925057685365.

It is an arithmetic number, because the mean of its divisors is an integer number (925057685365).

Almost surely, 2^{1850115370729} is an apocalyptic number.

It is an amenable number.

1850115370729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850115370729 is an equidigital number, since it uses as much as digits as its factorization.

1850115370729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 49.

The spelling of 1850115370729 in words is "one trillion, eight hundred fifty billion, one hundred fifteen million, three hundred seventy thousand, seven hundred twenty-nine".