1851833349241 has 2 divisors, whose sum is σ = 1851833349242. Its totient is φ = 1851833349240.

The previous prime is 1851833349229. The next prime is 1851833349263. The reversal of 1851833349241 is 1429433381581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1647616124025 + 204217225216 = 1283595^2 + 451904^2 .

It is an emirp because it is prime and its reverse (1429433381581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1851833349241 - 2¹⁹ = 1851832824953 is a prime.

It is a super-2 number, since 2×1851833349241² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1851833340241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925916674620 + 925916674621.

It is an arithmetic number, because the mean of its divisors is an integer number (925916674621).

Almost surely, 2^{1851833349241} is an apocalyptic number.

It is an amenable number.

1851833349241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1851833349241 is an equidigital number, since it uses as much as digits as its factorization.

1851833349241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The spelling of 1851833349241 in words is "one trillion, eight hundred fifty-one billion, eight hundred thirty-three million, three hundred forty-nine thousand, two hundred forty-one".