193204108189913 has 2 divisors, whose sum is σ = 193204108189914. Its totient is φ = 193204108189912.

The previous prime is 193204108189909. The next prime is 193204108189927. The reversal of 193204108189913 is 319981801402391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188822006527504 + 4382101662409 = 13741252^2 + 2093347^2 .

It is a cyclic number.

It is not a de Polignac number, because 193204108189913 - 2² = 193204108189909 is a prime.

It is a super-2 number, since 2×193204108189913² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (193204108189613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96602054094956 + 96602054094957.

It is an arithmetic number, because the mean of its divisors is an integer number (96602054094957).

Almost surely, 2^{193204108189913} is an apocalyptic number.

It is an amenable number.

193204108189913 is a deficient number, since it is larger than the sum of its proper divisors (1).

193204108189913 is an equidigital number, since it uses as much as digits as its factorization.

193204108189913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 59.

The spelling of 193204108189913 in words is "one hundred ninety-three trillion, two hundred four billion, one hundred eight million, one hundred eighty-nine thousand, nine hundred thirteen".