194974427 has 16 divisors (see below), whose sum is σ = 209848320. Its totient is φ = 180704832.

The previous prime is 194974421. The next prime is 194974457. The reversal of 194974427 is 724479491.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 194974427 - 2⁶ = 194974363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194974421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 134774 + ... + 136212.

It is an arithmetic number, because the mean of its divisors is an integer number (13115520).

Almost surely, 2^194974427 is an apocalyptic number.

194974427 is a deficient number, since it is larger than the sum of its proper divisors (14873893).

194974427 is a wasteful number, since it uses less digits than its factorization.

194974427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its digits is 508032, while the sum is 47.

The square root of 194974427 is about 13963.3243534625. The cubic root of 194974427 is about 579.8636490816.

The spelling of 194974427 in words is "one hundred ninety-four million, nine hundred seventy-four thousand, four hundred twenty-seven".