194820347 has 8 divisors (see below), whose sum is σ = 202119840. Its totient is φ = 187559680.

The previous prime is 194820343. The next prime is 194820349. The reversal of 194820347 is 743028491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194820347 - 2² = 194820343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194820347.

It is not an unprimeable number, because it can be changed into a prime (194820343) 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, 722 + ... + 19752.

It is an arithmetic number, because the mean of its divisors is an integer number (25264980).

Almost surely, 2^194820347 is an apocalyptic number.

194820347 is a deficient number, since it is larger than the sum of its proper divisors (7299493).

194820347 is a wasteful number, since it uses less digits than its factorization.

194820347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19413.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 194820347 is about 13957.8059522262. The cubic root of 194820347 is about 579.7108616314.

The spelling of 194820347 in words is "one hundred ninety-four million, eight hundred twenty thousand, three hundred forty-seven".