194964820 has 12 divisors (see below), whose sum is σ = 409426164. Its totient is φ = 77985920.

The previous prime is 194964817. The next prime is 194964821. The reversal of 194964820 is 28469491.

It can be written as a sum of positive squares in 2 ways, for example, as 39513796 + 155451024 = 6286^2 + 12468^2 .

It is a super-2 number, since 2×194964820² = 76022562075264800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194964821) 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 3 ways as a sum of consecutive naturals, for example, 4874101 + ... + 4874140.

It is an arithmetic number, because the mean of its divisors is an integer number (34118847).

Almost surely, 2^194964820 is an apocalyptic number.

194964820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194964820 is an abundant number, since it is smaller than the sum of its proper divisors (214461344).

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

194964820 is a wasteful number, since it uses less digits than its factorization.

194964820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748250 (or 9748248 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 194964820 is about 13962.9803408871. The cubic root of 194964820 is about 579.8541250265.

The spelling of 194964820 in words is "one hundred ninety-four million, nine hundred sixty-four thousand, eight hundred twenty".