194838529 has 4 divisors (see below), whose sum is σ = 194867200. Its totient is φ = 194809860.

The previous prime is 194838517. The next prime is 194838557. The reversal of 194838529 is 925838491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 194838529 - 2⁷ = 194838401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194818529) 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, 2272 + ... + 19870.

It is an arithmetic number, because the mean of its divisors is an integer number (48716800).

It is a Proth number, since it is equal to 2973 ⋅ 2¹⁶ + 1 and 2973 < 2¹⁶.

Almost surely, 2^194838529 is an apocalyptic number.

It is an amenable number.

194838529 is a deficient number, since it is larger than the sum of its proper divisors (28671).

194838529 is a wasteful number, since it uses less digits than its factorization.

194838529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28670.

The product of its digits is 622080, while the sum is 49.

The square root of 194838529 is about 13958.4572571613. The cubic root of 194838529 is about 579.7288952971.

The spelling of 194838529 in words is "one hundred ninety-four million, eight hundred thirty-eight thousand, five hundred twenty-nine".