1801484242249 has 2 divisors, whose sum is σ = 1801484242250. Its totient is φ = 1801484242248.

The previous prime is 1801484242189. The next prime is 1801484242267. The reversal of 1801484242249 is 9422424841081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1166307121849 + 635177120400 = 1079957^2 + 796980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1801484242249 - 2⁹ = 1801484241737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1801484242289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900742121124 + 900742121125.

It is an arithmetic number, because the mean of its divisors is an integer number (900742121125).

Almost surely, 2^{1801484242249} is an apocalyptic number.

It is an amenable number.

1801484242249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801484242249 is an equidigital number, since it uses as much as digits as its factorization.

1801484242249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1179648, while the sum is 49.

The spelling of 1801484242249 in words is "one trillion, eight hundred one billion, four hundred eighty-four million, two hundred forty-two thousand, two hundred forty-nine".