194828218624 has 54 divisors (see below), whose sum is σ = 421111669146. Its totient is φ = 89920696320.

The previous prime is 194828218601. The next prime is 194828218661. The reversal of 194828218624 is 426812828491.

It can be written as a sum of positive squares in 3 ways, for example, as 17108640000 + 177719578624 = 130800^2 + 421568^2 .

It is a super-2 number, since 2×194828218624² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2208357 + ... + 2294884.

Almost surely, 2^194828218624 is an apocalyptic number.

It is an amenable number.

194828218624 is an abundant number, since it is smaller than the sum of its proper divisors (226283450522).

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

194828218624 is an equidigital number, since it uses as much as digits as its factorization.

194828218624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503283 (or 4503256 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 55.

The spelling of 194828218624 in words is "one hundred ninety-four billion, eight hundred twenty-eight million, two hundred eighteen thousand, six hundred twenty-four".