194384145 has 16 divisors (see below), whose sum is σ = 311192640. Its totient is φ = 103612224.

The previous prime is 194384143. The next prime is 194384213. The reversal of 194384145 is 541483491.

It is not a de Polignac number, because 194384145 - 2¹ = 194384143 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (194384143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39987 + ... + 44583.

It is an arithmetic number, because the mean of its divisors is an integer number (19449540).

Almost surely, 2^194384145 is an apocalyptic number.

194384145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194384145 is a deficient number, since it is larger than the sum of its proper divisors (116808495).

194384145 is a wasteful number, since it uses less digits than its factorization.

194384145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7424.

The product of its digits is 69120, while the sum is 39.

The square root of 194384145 is about 13942.1714592814. The cubic root of 194384145 is about 579.2778815346.

The spelling of 194384145 in words is "one hundred ninety-four million, three hundred eighty-four thousand, one hundred forty-five".