194899983 has 4 divisors (see below), whose sum is σ = 259866648. Its totient is φ = 129933320.

The previous prime is 194899973. The next prime is 194899997. The reversal of 194899983 is 389998491.

It is a happy number.

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 194899983 - 2¹⁶ = 194834447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194899933) 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, 32483328 + ... + 32483333.

It is an arithmetic number, because the mean of its divisors is an integer number (64966662).

Almost surely, 2^194899983 is an apocalyptic number.

194899983 is a deficient number, since it is larger than the sum of its proper divisors (64966665).

194899983 is an equidigital number, since it uses as much as digits as its factorization.

194899983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64966664.

The product of its digits is 5038848, while the sum is 60.

The square root of 194899983 is about 13960.6584013792. The cubic root of 194899983 is about 579.7898396334.

The spelling of 194899983 in words is "one hundred ninety-four million, eight hundred ninety-nine thousand, nine hundred eighty-three".