1840940492801 has 12 divisors (see below), whose sum is σ = 1874170727676. Its totient is φ = 1808288118720.

The previous prime is 1840940492759. The next prime is 1840940492813. The reversal of 1840940492801 is 1082940490481.

It can be written as a sum of positive squares in 6 ways, for example, as 42404693776 + 1798535799025 = 205924^2 + 1341095^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1840940492801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840940492801.

It is not an unprimeable number, because it can be changed into a prime (1840940492851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2390015 + ... + 3064971.

It is an arithmetic number, because the mean of its divisors is an integer number (156180893973).

Almost surely, 2^{1840940492801} is an apocalyptic number.

It is an amenable number.

1840940492801 is a deficient number, since it is larger than the sum of its proper divisors (33230234875).

1840940492801 is an frugal number, since it uses more digits than its factorization.

1840940492801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675812 (or 675751 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 1840940492801 in words is "one trillion, eight hundred forty billion, nine hundred forty million, four hundred ninety-two thousand, eight hundred one".