194797849 has 9 divisors (see below), whose sum is σ = 207182941. Its totient is φ = 183115840.

The previous prime is 194797829. The next prime is 194797853. The reversal of 194797849 is 948797491.

The square root of 194797849 is 13957.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 697225 + 194100624 = 835^2 + 13932^2 .

It is not a de Polignac number, because 194797849 - 2¹¹ = 194795801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194797793 and 194797802.

It is not an unprimeable number, because it can be changed into a prime (194797829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 236859 + ... + 237679.

Almost surely, 2^194797849 is an apocalyptic number.

194797849 is the 13957-th square number.

194797849 is the 6979-th centered octagonal number.

It is an amenable number.

194797849 is a deficient number, since it is larger than the sum of its proper divisors (12385092).

194797849 is an frugal number, since it uses more digits than its factorization.

194797849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 838 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 58.

The cubic root of 194797849 is about 579.6885456238.

The spelling of 194797849 in words is "one hundred ninety-four million, seven hundred ninety-seven thousand, eight hundred forty-nine".