194672705 has 4 divisors (see below), whose sum is σ = 233607252. Its totient is φ = 155738160.

The previous prime is 194672663. The next prime is 194672717. The reversal of 194672705 is 507276491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507276491 = 4153 ⋅122147.

It can be written as a sum of positive squares in 2 ways, for example, as 135582736 + 59089969 = 11644^2 + 7687^2 .

It is not a de Polignac number, because 194672705 - 2⁶ = 194672641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19467266 + ... + 19467275.

It is an arithmetic number, because the mean of its divisors is an integer number (58401813).

Almost surely, 2^194672705 is an apocalyptic number.

It is an amenable number.

194672705 is a deficient number, since it is larger than the sum of its proper divisors (38934547).

194672705 is an equidigital number, since it uses as much as digits as its factorization.

194672705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38934546.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 194672705 is about 13952.5160813382. The cubic root of 194672705 is about 579.5643825761.

The spelling of 194672705 in words is "one hundred ninety-four million, six hundred seventy-two thousand, seven hundred five".