194988329 has 4 divisors (see below), whose sum is σ = 197659476. Its totient is φ = 192317184.

The previous prime is 194988293. The next prime is 194988341. The reversal of 194988329 is 923889491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77915929 + 117072400 = 8827^2 + 10820^2 .

It is a cyclic number.

It is not a de Polignac number, because 194988329 - 2²⁴ = 178211113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194988349) 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, 1335464 + ... + 1335609.

It is an arithmetic number, because the mean of its divisors is an integer number (49414869).

Almost surely, 2^194988329 is an apocalyptic number.

It is an amenable number.

194988329 is a deficient number, since it is larger than the sum of its proper divisors (2671147).

194988329 is an equidigital number, since it uses as much as digits as its factorization.

194988329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671146.

The product of its digits is 1119744, while the sum is 53.

The square root of 194988329 is about 13963.8221486812. The cubic root of 194988329 is about 579.8774305007.

The spelling of 194988329 in words is "one hundred ninety-four million, nine hundred eighty-eight thousand, three hundred twenty-nine".