280912230149 has 2 divisors, whose sum is σ = 280912230150. Its totient is φ = 280912230148.

The previous prime is 280912230143. The next prime is 280912230187. The reversal of 280912230149 is 941032219082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155732836900 + 125179393249 = 394630^2 + 353807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280912230149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280912230143) 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, 140456115074 + 140456115075.

It is an arithmetic number, because the mean of its divisors is an integer number (140456115075).

Almost surely, 2^280912230149 is an apocalyptic number.

It is an amenable number.

280912230149 is a deficient number, since it is larger than the sum of its proper divisors (1).

280912230149 is an equidigital number, since it uses as much as digits as its factorization.

280912230149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 280912230149 in words is "two hundred eighty billion, nine hundred twelve million, two hundred thirty thousand, one hundred forty-nine".