194639882 has 4 divisors (see below), whose sum is σ = 291959826. Its totient is φ = 97319940.

The previous prime is 194639849. The next prime is 194639899. The reversal of 194639882 is 288936491.

It is a happy number.

194639882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 288936491 = 283 ⋅1020977.

It can be written as a sum of positive squares in only one way, i.e., 106110601 + 88529281 = 10301^2 + 9409^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 194639882.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48659969 + ... + 48659972.

Almost surely, 2^194639882 is an apocalyptic number.

194639882 is a deficient number, since it is larger than the sum of its proper divisors (97319944).

194639882 is an equidigital number, since it uses as much as digits as its factorization.

194639882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97319943.

The product of its digits is 746496, while the sum is 50.

The square root of 194639882 is about 13951.3397922924. The cubic root of 194639882 is about 579.5318080541.

The spelling of 194639882 in words is "one hundred ninety-four million, six hundred thirty-nine thousand, eight hundred eighty-two".