281441889049 has 2 divisors, whose sum is σ = 281441889050. Its totient is φ = 281441889048.

The previous prime is 281441889037. The next prime is 281441889067. The reversal of 281441889049 is 940988144182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176639481225 + 104802407824 = 420285^2 + 323732^2 .

It is a cyclic number.

It is not a de Polignac number, because 281441889049 - 2¹³ = 281441880857 is a prime.

It is a super-2 number, since 2×281441889049² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281441888984 and 281441889002.

It is not a weakly prime, because it can be changed into another prime (281441883049) 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 as a sum of consecutive naturals, namely, 140720944524 + 140720944525.

It is an arithmetic number, because the mean of its divisors is an integer number (140720944525).

Almost surely, 2^281441889049 is an apocalyptic number.

It is an amenable number.

281441889049 is a deficient number, since it is larger than the sum of its proper divisors (1).

281441889049 is an equidigital number, since it uses as much as digits as its factorization.

281441889049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 281441889049 in words is "two hundred eighty-one billion, four hundred forty-one million, eight hundred eighty-nine thousand, forty-nine".