194940918 has 24 divisors (see below), whose sum is σ = 438016488. Its totient is φ = 64980144.

The previous prime is 194940917. The next prime is 194940919. The reversal of 194940918 is 819049491.

It is an interprime number because it is at equal distance from previous prime (194940917) and next prime (194940919).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194940917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200071 + ... + 201042.

It is an arithmetic number, because the mean of its divisors is an integer number (18250687).

Almost surely, 2^194940918 is an apocalyptic number.

194940918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

194940918 is an abundant number, since it is smaller than the sum of its proper divisors (243075570).

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

194940918 is an equidigital number, since it uses as much as digits as its factorization.

194940918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401130 (or 401118 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 194940918 is about 13962.1244085562. The cubic root of 194940918 is about 579.8304280339.

The spelling of 194940918 in words is "one hundred ninety-four million, nine hundred forty thousand, nine hundred eighteen".