194718949 has 2 divisors, whose sum is σ = 194718950. Its totient is φ = 194718948.

The previous prime is 194718941. The next prime is 194718971. The reversal of 194718949 is 949817491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169468324 + 25250625 = 13018^2 + 5025^2 .

It is a cyclic number.

It is not a de Polignac number, because 194718949 - 2³ = 194718941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194718896 and 194718905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194718941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97359474 + 97359475.

It is an arithmetic number, because the mean of its divisors is an integer number (97359475).

Almost surely, 2^194718949 is an apocalyptic number.

It is an amenable number.

194718949 is a deficient number, since it is larger than the sum of its proper divisors (1).

194718949 is an equidigital number, since it uses as much as digits as its factorization.

194718949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 52.

The square root of 194718949 is about 13954.1731750756. The cubic root of 194718949 is about 579.6102702853.

The spelling of 194718949 in words is "one hundred ninety-four million, seven hundred eighteen thousand, nine hundred forty-nine".