194856623 has 4 divisors (see below), whose sum is σ = 209845608. Its totient is φ = 179867640.

The previous prime is 194856619. The next prime is 194856659. The reversal of 194856623 is 326658491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194856623 - 2² = 194856619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194855623) 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, 7494473 + ... + 7494498.

It is an arithmetic number, because the mean of its divisors is an integer number (52461402).

Almost surely, 2^194856623 is an apocalyptic number.

194856623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

194856623 is a deficient number, since it is larger than the sum of its proper divisors (14988985).

194856623 is a wasteful number, since it uses less digits than its factorization.

194856623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14988984.

The product of its digits is 311040, while the sum is 44.

The square root of 194856623 is about 13959.1053796438. The cubic root of 194856623 is about 579.7468405669.

The spelling of 194856623 in words is "one hundred ninety-four million, eight hundred fifty-six thousand, six hundred twenty-three".