1921714840733 has 2 divisors, whose sum is σ = 1921714840734. Its totient is φ = 1921714840732.

The previous prime is 1921714840679. The next prime is 1921714840751. The reversal of 1921714840733 is 3370484171291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176526363684 + 745188477049 = 1084678^2 + 863243^2 .

It is a cyclic number.

It is not a de Polignac number, because 1921714840733 - 2¹² = 1921714836637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1921714840753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960857420366 + 960857420367.

It is an arithmetic number, because the mean of its divisors is an integer number (960857420367).

Almost surely, 2^{1921714840733} is an apocalyptic number.

It is an amenable number.

1921714840733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921714840733 is an equidigital number, since it uses as much as digits as its factorization.

1921714840733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 1921714840733 in words is "one trillion, nine hundred twenty-one billion, seven hundred fourteen million, eight hundred forty thousand, seven hundred thirty-three".