194803638 has 16 divisors (see below), whose sum is σ = 393056496. Its totient is φ = 64359680.

The previous prime is 194803627. The next prime is 194803667. The reversal of 194803638 is 836308491.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 194803638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142983 + ... + 144338.

It is an arithmetic number, because the mean of its divisors is an integer number (24566031).

Almost surely, 2^194803638 is an apocalyptic number.

194803638 is an abundant number, since it is smaller than the sum of its proper divisors (198252858).

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

194803638 is a wasteful number, since it uses less digits than its factorization.

194803638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287439.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 194803638 is about 13957.2073854335. The cubic root of 194803638 is about 579.6942879592.

The spelling of 194803638 in words is "one hundred ninety-four million, eight hundred three thousand, six hundred thirty-eight".