194942705 has 8 divisors (see below), whose sum is σ = 234627432. Its totient is φ = 155490048.

The previous prime is 194942653. The next prime is 194942719. The reversal of 194942705 is 507249491.

It can be written as a sum of positive squares in 4 ways, for example, as 6265009 + 188677696 = 2503^2 + 13736^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194942705 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56162 + ... + 59531.

It is an arithmetic number, because the mean of its divisors is an integer number (29328429).

Almost surely, 2^194942705 is an apocalyptic number.

It is an amenable number.

194942705 is a deficient number, since it is larger than the sum of its proper divisors (39684727).

194942705 is a wasteful number, since it uses less digits than its factorization.

194942705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116035.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 194942705 is about 13962.1884029689. The cubic root of 194942705 is about 579.8321997738.

The spelling of 194942705 in words is "one hundred ninety-four million, nine hundred forty-two thousand, seven hundred five".