194381395 has 16 divisors (see below), whose sum is σ = 262124352. Its totient is φ = 137301120.

The previous prime is 194381393. The next prime is 194381423. The reversal of 194381395 is 593183491.

It is not a de Polignac number, because 194381395 - 2¹ = 194381393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194381393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 63516 + ... + 66505.

It is an arithmetic number, because the mean of its divisors is an integer number (16382772).

Almost surely, 2^194381395 is an apocalyptic number.

194381395 is a deficient number, since it is larger than the sum of its proper divisors (67742957).

194381395 is a wasteful number, since it uses less digits than its factorization.

194381395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130062.

The product of its digits is 116640, while the sum is 43.

The square root of 194381395 is about 13942.0728372793. The cubic root of 194381395 is about 579.2751497931.

It can be divided in two parts, 1943 and 81395, that added together give a palindrome (83338).

The spelling of 194381395 in words is "one hundred ninety-four million, three hundred eighty-one thousand, three hundred ninety-five".