194851968 has 64 divisors (see below), whose sum is σ = 519073920. Its totient is φ = 64762880.

The previous prime is 194851939. The next prime is 194852017. The reversal of 194851968 is 869158491.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 194851968.

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, 213433 + ... + 214343.

It is an arithmetic number, because the mean of its divisors is an integer number (8110530).

Almost surely, 2^194851968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194851968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259536960).

194851968 is an abundant number, since it is smaller than the sum of its proper divisors (324221952).

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

194851968 is an equidigital number, since it uses as much as digits as its factorization.

194851968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1473 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 194851968 is about 13958.9386416017. The cubic root of 194851968 is about 579.7422239365.

The spelling of 194851968 in words is "one hundred ninety-four million, eight hundred fifty-one thousand, nine hundred sixty-eight".