194922001 has 4 divisors (see below), whose sum is σ = 194958900. Its totient is φ = 194885104.

The previous prime is 194921989. The next prime is 194922029. The reversal of 194922001 is 100229491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100229491 = 1319 ⋅75989.

It can be written as a sum of positive squares in 2 ways, for example, as 291600 + 194630401 = 540^2 + 13951^2 .

It is a cyclic number.

It is not a de Polignac number, because 194922001 - 2⁷ = 194921873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194922061) 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 3 ways as a sum of consecutive naturals, for example, 8866 + ... + 21643.

It is an arithmetic number, because the mean of its divisors is an integer number (48739725).

Almost surely, 2^194922001 is an apocalyptic number.

It is an amenable number.

194922001 is a deficient number, since it is larger than the sum of its proper divisors (36899).

194922001 is an equidigital number, since it uses as much as digits as its factorization.

194922001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36898.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 194922001 is about 13961.4469522324. The cubic root of 194922001 is about 579.8116719117.

The spelling of 194922001 in words is "one hundred ninety-four million, nine hundred twenty-two thousand, one".