1801484161 has 2 divisors, whose sum is σ = 1801484162. Its totient is φ = 1801484160.

The previous prime is 1801484129. The next prime is 1801484189. The reversal of 1801484161 is 1614841081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1759299136 + 42185025 = 41944^2 + 6495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1801484161 - 2⁵ = 1801484129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1801484261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900742080 + 900742081.

It is an arithmetic number, because the mean of its divisors is an integer number (900742081).

Almost surely, 2^1801484161 is an apocalyptic number.

It is an amenable number.

1801484161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801484161 is an equidigital number, since it uses as much as digits as its factorization.

1801484161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 1801484161 is about 42443.8942723214. The cubic root of 1801484161 is about 1216.7746393783.

The spelling of 1801484161 in words is "one billion, eight hundred one million, four hundred eighty-four thousand, one hundred sixty-one".