194154193 has 2 divisors, whose sum is σ = 194154194. Its totient is φ = 194154192.

The previous prime is 194154187. The next prime is 194154203. The reversal of 194154193 is 391451491.

194154193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 5689-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123476544 + 70677649 = 11112^2 + 8407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194154193 is a prime.

It is not a weakly prime, because it can be changed into another prime (194154143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97077096 + 97077097.

It is an arithmetic number, because the mean of its divisors is an integer number (97077097).

Almost surely, 2^194154193 is an apocalyptic number.

It is an amenable number.

194154193 is a deficient number, since it is larger than the sum of its proper divisors (1).

194154193 is an equidigital number, since it uses as much as digits as its factorization.

194154193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 194154193 is about 13933.9223838803. The cubic root of 194154193 is about 579.0493672379.

The spelling of 194154193 in words is "one hundred ninety-four million, one hundred fifty-four thousand, one hundred ninety-three".