194336921608 has 32 divisors (see below), whose sum is σ = 406122055200. Its totient is φ = 86639369472.

The previous prime is 194336921563. The next prime is 194336921609. The reversal of 194336921608 is 806129633491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (194336921609) 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, 37601310 + ... + 37606477.

It is an arithmetic number, because the mean of its divisors is an integer number (12691314225).

Almost surely, 2^194336921608 is an apocalyptic number.

It is an amenable number.

194336921608 is an abundant number, since it is smaller than the sum of its proper divisors (211785133592).

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

194336921608 is a wasteful number, since it uses less digits than its factorization.

194336921608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75207829 (or 75207825 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 194336921608 in words is "one hundred ninety-four billion, three hundred thirty-six million, nine hundred twenty-one thousand, six hundred eight".