195198936399 has 8 divisors (see below), whose sum is σ = 289183609520. Its totient is φ = 130132624248.

The previous prime is 195198936397. The next prime is 195198936421. The reversal of 195198936399 is 993639891591.

195198936399 is a `hidden beast` number, since 1 + 95 + 1 + 98 + 9 + 363 + 99 = 666.

It is not a de Polignac number, because 195198936399 - 2¹ = 195198936397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195198936397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3614795092 + ... + 3614795145.

It is an arithmetic number, because the mean of its divisors is an integer number (36147951190).

Almost surely, 2^195198936399 is an apocalyptic number.

195198936399 is a deficient number, since it is larger than the sum of its proper divisors (93984673121).

195198936399 is an equidigital number, since it uses as much as digits as its factorization.

195198936399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229590246 (or 7229590240 counting only the distinct ones).

The product of its digits is 127545840, while the sum is 72.

The spelling of 195198936399 in words is "one hundred ninety-five billion, one hundred ninety-eight million, nine hundred thirty-six thousand, three hundred ninety-nine".