194428914 has 8 divisors (see below), whose sum is σ = 388857840. Its totient is φ = 64809636.

The previous prime is 194428907. The next prime is 194428921. The reversal of 194428914 is 419824491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (194428907) and next prime (194428921).

It is a sphenic number, since it is the product of 3 distinct primes.

194428914 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16202404 + ... + 16202415.

It is an arithmetic number, because the mean of its divisors is an integer number (48607230).

Almost surely, 2^194428914 is an apocalyptic number.

194428914 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194428914 is a wasteful number, since it uses less digits than its factorization.

194428914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32404824.

The product of its digits is 82944, while the sum is 42.

The square root of 194428914 is about 13943.7768915025. The cubic root of 194428914 is about 579.3223496689.

The spelling of 194428914 in words is "one hundred ninety-four million, four hundred twenty-eight thousand, nine hundred fourteen".