194939768 has 32 divisors (see below), whose sum is σ = 372556800. Its totient is φ = 95608032.

The previous prime is 194939761. The next prime is 194939807. The reversal of 194939768 is 867939491.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194939761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104621 + ... + 106467.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^194939768 is an apocalyptic number.

It is an amenable number.

194939768 is a deficient number, since it is larger than the sum of its proper divisors (177617032).

194939768 is a wasteful number, since it uses less digits than its factorization.

194939768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2095 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 56.

The square root of 194939768 is about 13962.0832256508. The cubic root of 194939768 is about 579.8292878486.

The spelling of 194939768 in words is "one hundred ninety-four million, nine hundred thirty-nine thousand, seven hundred sixty-eight".