1934219839309 has 2 divisors, whose sum is σ = 1934219839310. Its totient is φ = 1934219839308.

The previous prime is 1934219839241. The next prime is 1934219839351. The reversal of 1934219839309 is 9039389124391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1718138965284 + 216080874025 = 1310778^2 + 464845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1934219839309 - 2⁹ = 1934219838797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1934219839399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 967109919654 + 967109919655.

It is an arithmetic number, because the mean of its divisors is an integer number (967109919655).

Almost surely, 2^{1934219839309} is an apocalyptic number.

It is an amenable number.

1934219839309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1934219839309 is an equidigital number, since it uses as much as digits as its factorization.

1934219839309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11337408, while the sum is 61.

The spelling of 1934219839309 in words is "one trillion, nine hundred thirty-four billion, two hundred nineteen million, eight hundred thirty-nine thousand, three hundred nine".