1993289361929 has 2 divisors, whose sum is σ = 1993289361930. Its totient is φ = 1993289361928.

The previous prime is 1993289361907. The next prime is 1993289361949. The reversal of 1993289361929 is 9291639823991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1892275360000 + 101014001929 = 1375600^2 + 317827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1993289361929 - 2²⁸ = 1993020926473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1993289361949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996644680964 + 996644680965.

It is an arithmetic number, because the mean of its divisors is an integer number (996644680965).

Almost surely, 2^{1993289361929} is an apocalyptic number.

It is an amenable number.

1993289361929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993289361929 is an equidigital number, since it uses as much as digits as its factorization.

1993289361929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102036672, while the sum is 71.

The spelling of 1993289361929 in words is "one trillion, nine hundred ninety-three billion, two hundred eighty-nine million, three hundred sixty-one thousand, nine hundred twenty-nine".