194644983 has 32 divisors (see below), whose sum is σ = 286026496. Its totient is φ = 117013248.

The previous prime is 194644943. The next prime is 194644993. The reversal of 194644983 is 389446491.

It is a happy number.

It is not a de Polignac number, because 194644983 - 2¹⁰ = 194643959 is a prime.

It is a Duffinian number.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194644913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425691 + ... + 426147.

It is an arithmetic number, because the mean of its divisors is an integer number (8938328).

Almost surely, 2^194644983 is an apocalyptic number.

194644983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

194644983 is a deficient number, since it is larger than the sum of its proper divisors (91381513).

194644983 is a wasteful number, since it uses less digits than its factorization.

194644983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its digits is 746496, while the sum is 48.

The square root of 194644983 is about 13951.5226050779. The cubic root of 194644983 is about 579.5368706786.

The spelling of 194644983 in words is "one hundred ninety-four million, six hundred forty-four thousand, nine hundred eighty-three".