1969843379353 has 2 divisors, whose sum is σ = 1969843379354. Its totient is φ = 1969843379352.

The previous prime is 1969843379347. The next prime is 1969843379447. The reversal of 1969843379353 is 3539733489691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1279461863689 + 690381515664 = 1131133^2 + 830892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969843379353 - 2¹³ = 1969843371161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1969843379323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984921689676 + 984921689677.

It is an arithmetic number, because the mean of its divisors is an integer number (984921689677).

Almost surely, 2^{1969843379353} is an apocalyptic number.

It is an amenable number.

1969843379353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969843379353 is an equidigital number, since it uses as much as digits as its factorization.

1969843379353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396809280, while the sum is 70.

The spelling of 1969843379353 in words is "one trillion, nine hundred sixty-nine billion, eight hundred forty-three million, three hundred seventy-nine thousand, three hundred fifty-three".