1851049516859 has 2 divisors, whose sum is σ = 1851049516860. Its totient is φ = 1851049516858.

The previous prime is 1851049516837. The next prime is 1851049516873. The reversal of 1851049516859 is 9586159401581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1851049516859 - 2²⁸ = 1850781081403 is a prime.

It is a super-3 number, since 3×1851049516859³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1851049516879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925524758429 + 925524758430.

It is an arithmetic number, because the mean of its divisors is an integer number (925524758430).

Almost surely, 2^{1851049516859} is an apocalyptic number.

1851049516859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1851049516859 is an equidigital number, since it uses as much as digits as its factorization.

1851049516859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552000, while the sum is 62.

The spelling of 1851049516859 in words is "one trillion, eight hundred fifty-one billion, forty-nine million, five hundred sixteen thousand, eight hundred fifty-nine".