194418428 has 6 divisors (see below), whose sum is σ = 340232256. Its totient is φ = 97209212.

The previous prime is 194418403. The next prime is 194418449. The reversal of 194418428 is 824814491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24302300 + ... + 24302307.

It is an arithmetic number, because the mean of its divisors is an integer number (56705376).

Almost surely, 2^194418428 is an apocalyptic number.

It is an amenable number.

194418428 is a deficient number, since it is larger than the sum of its proper divisors (145813828).

194418428 is a wasteful number, since it uses less digits than its factorization.

194418428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48604611 (or 48604609 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 194418428 is about 13943.4008764003. The cubic root of 194418428 is about 579.3119347513.

The spelling of 194418428 in words is "one hundred ninety-four million, four hundred eighteen thousand, four hundred twenty-eight".