198903791692327 has 2 divisors, whose sum is σ = 198903791692328. Its totient is φ = 198903791692326.

The previous prime is 198903791692261. The next prime is 198903791692349. The reversal of 198903791692327 is 723296197309891.

It is a strong prime.

It is an emirp because it is prime and its reverse (723296197309891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198903791692327 is a prime.

It is a super-2 number, since 2×198903791692327² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198903791992327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99451895846163 + 99451895846164.

It is an arithmetic number, because the mean of its divisors is an integer number (99451895846164).

Almost surely, 2^{198903791692327} is an apocalyptic number.

198903791692327 is a deficient number, since it is larger than the sum of its proper divisors (1).

198903791692327 is an equidigital number, since it uses as much as digits as its factorization.

198903791692327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 555532992, while the sum is 76.

The spelling of 198903791692327 in words is "one hundred ninety-eight trillion, nine hundred three billion, seven hundred ninety-one million, six hundred ninety-two thousand, three hundred twenty-seven".