1801836587161 has 16 divisors (see below), whose sum is σ = 2050060723200. Its totient is φ = 1571713190208.

The previous prime is 1801836587141. The next prime is 1801836587179. The reversal of 1801836587161 is 1617856381081.

It is a cyclic number.

It is not a de Polignac number, because 1801836587161 - 2²⁷ = 1801702369433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1801836587101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50827041 + ... + 50862478.

It is an arithmetic number, because the mean of its divisors is an integer number (128128795200).

Almost surely, 2^{1801836587161} is an apocalyptic number.

It is an amenable number.

1801836587161 is a deficient number, since it is larger than the sum of its proper divisors (248224136039).

1801836587161 is a wasteful number, since it uses less digits than its factorization.

1801836587161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101689608.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 1801836587161 in words is "one trillion, eight hundred one billion, eight hundred thirty-six million, five hundred eighty-seven thousand, one hundred sixty-one".