1929693054217 has 2 divisors, whose sum is σ = 1929693054218. Its totient is φ = 1929693054216.

The previous prime is 1929693054199. The next prime is 1929693054313. The reversal of 1929693054217 is 7124503969291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1732708872976 + 196984181241 = 1316324^2 + 443829^2 .

It is a cyclic number.

It is not a de Polignac number, because 1929693054217 - 2¹¹ = 1929693052169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1929690054217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964846527108 + 964846527109.

It is an arithmetic number, because the mean of its divisors is an integer number (964846527109).

Almost surely, 2^{1929693054217} is an apocalyptic number.

It is an amenable number.

1929693054217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1929693054217 is an equidigital number, since it uses as much as digits as its factorization.

1929693054217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 1929693054217 in words is "one trillion, nine hundred twenty-nine billion, six hundred ninety-three million, fifty-four thousand, two hundred seventeen".