1219978003373 has 2 divisors, whose sum is σ = 1219978003374. Its totient is φ = 1219978003372.

The previous prime is 1219978003369. The next prime is 1219978003399. The reversal of 1219978003373 is 3733008799121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 892471315849 + 327506687524 = 944707^2 + 572282^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219978003373 - 2² = 1219978003369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1219978003313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609989001686 + 609989001687.

It is an arithmetic number, because the mean of its divisors is an integer number (609989001687).

Almost surely, 2^{1219978003373} is an apocalyptic number.

It is an amenable number.

1219978003373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219978003373 is an equidigital number, since it uses as much as digits as its factorization.

1219978003373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 1219978003373 in words is "one trillion, two hundred nineteen billion, nine hundred seventy-eight million, three thousand, three hundred seventy-three".