1214309998549 has 2 divisors, whose sum is σ = 1214309998550. Its totient is φ = 1214309998548.

The previous prime is 1214309998537. The next prime is 1214309998553. The reversal of 1214309998549 is 9458999034121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009508496049 + 204801502500 = 1004743^2 + 452550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214309998549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214309990549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607154999274 + 607154999275.

It is an arithmetic number, because the mean of its divisors is an integer number (607154999275).

Almost surely, 2^{1214309998549} is an apocalyptic number.

It is an amenable number.

1214309998549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214309998549 is an equidigital number, since it uses as much as digits as its factorization.

1214309998549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25194240, while the sum is 64.

The spelling of 1214309998549 in words is "one trillion, two hundred fourteen billion, three hundred nine million, nine hundred ninety-eight thousand, five hundred forty-nine".