194463870 has 16 divisors (see below), whose sum is σ = 466713360. Its totient is φ = 51857024.

The previous prime is 194463851. The next prime is 194463877. The reversal of 194463870 is 78364491.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194463877) 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, 3241035 + ... + 3241094.

It is an arithmetic number, because the mean of its divisors is an integer number (29169585).

Almost surely, 2^194463870 is an apocalyptic number.

194463870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194463870 is an abundant number, since it is smaller than the sum of its proper divisors (272249490).

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

194463870 is a wasteful number, since it uses less digits than its factorization.

194463870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482139.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 194463870 is about 13945.0302975648. The cubic root of 194463870 is about 579.3570660049.

The spelling of 194463870 in words is "one hundred ninety-four million, four hundred sixty-three thousand, eight hundred seventy".