194643956 has 12 divisors (see below), whose sum is σ = 366829092. Its totient is φ = 89835648.

The previous prime is 194643949. The next prime is 194643959. The reversal of 194643956 is 659346491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34621456 + 160022500 = 5884^2 + 12650^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 194643956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194643959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871525 + ... + 1871628.

It is an arithmetic number, because the mean of its divisors is an integer number (30569091).

Almost surely, 2^194643956 is an apocalyptic number.

It is an amenable number.

194643956 is a deficient number, since it is larger than the sum of its proper divisors (172185136).

194643956 is a wasteful number, since it uses less digits than its factorization.

194643956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743170 (or 3743168 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 194643956 is about 13951.4857990108. The cubic root of 194643956 is about 579.5358514120.

The spelling of 194643956 in words is "one hundred ninety-four million, six hundred forty-three thousand, nine hundred fifty-six".