194999998453399 has 4 divisors (see below), whose sum is σ = 195000171011536. Its totient is φ = 194999825895264.

The previous prime is 194999998453297. The next prime is 194999998453451. The reversal of 194999998453399 is 993354899999491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194999998453399 - 2⁴¹ = 192800975197847 is a prime.

It is a super-2 number, since 2×194999998453399² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194999998453999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84572739 + ... + 86847844.

It is an arithmetic number, because the mean of its divisors is an integer number (48750042752884).

Almost surely, 2^{194999998453399} is an apocalyptic number.

194999998453399 is a deficient number, since it is larger than the sum of its proper divisors (172558137).

194999998453399 is a wasteful number, since it uses less digits than its factorization.

194999998453399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172558136.

The product of its digits is 247949112960, while the sum is 100.

The spelling of 194999998453399 in words is "one hundred ninety-four trillion, nine hundred ninety-nine billion, nine hundred ninety-eight million, four hundred fifty-three thousand, three hundred ninety-nine".