199974817199 has 2 divisors, whose sum is σ = 199974817200. Its totient is φ = 199974817198.

The previous prime is 199974817181. The next prime is 199974817213. The reversal of 199974817199 is 991718479991.

It is a strong prime.

It is an emirp because it is prime and its reverse (991718479991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199974817199 - 2¹⁶ = 199974751663 is a prime.

It is a super-3 number, since 3×199974817199³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199974817109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99987408599 + 99987408600.

It is an arithmetic number, because the mean of its divisors is an integer number (99987408600).

Almost surely, 2^199974817199 is an apocalyptic number.

199974817199 is a deficient number, since it is larger than the sum of its proper divisors (1).

199974817199 is an equidigital number, since it uses as much as digits as its factorization.

199974817199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92588832, while the sum is 74.

The spelling of 199974817199 in words is "one hundred ninety-nine billion, nine hundred seventy-four million, eight hundred seventeen thousand, one hundred ninety-nine".