194287861628 has 24 divisors (see below), whose sum is σ = 388591533792. Its totient is φ = 83262838464.

The previous prime is 194287861589. The next prime is 194287861637. The reversal of 194287861628 is 826168782491.

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, 633950 + ... + 889082.

It is an arithmetic number, because the mean of its divisors is an integer number (16191313908).

Almost surely, 2^194287861628 is an apocalyptic number.

It is an amenable number.

194287861628 is an abundant number, since it is smaller than the sum of its proper divisors (194303672164).

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

194287861628 is a wasteful number, since it uses less digits than its factorization.

194287861628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282341 (or 282339 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 62.

The spelling of 194287861628 in words is "one hundred ninety-four billion, two hundred eighty-seven million, eight hundred sixty-one thousand, six hundred twenty-eight".