194738449 has 2 divisors, whose sum is σ = 194738450. Its totient is φ = 194738448.

The previous prime is 194738407. The next prime is 194738459. The reversal of 194738449 is 944837491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186814224 + 7924225 = 13668^2 + 2815^2 .

It is a cyclic number.

It is not a de Polignac number, because 194738449 - 2⁷ = 194738321 is a prime.

It is not a weakly prime, because it can be changed into another prime (194738459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97369224 + 97369225.

It is an arithmetic number, because the mean of its divisors is an integer number (97369225).

Almost surely, 2^194738449 is an apocalyptic number.

It is an amenable number.

194738449 is a deficient number, since it is larger than the sum of its proper divisors (1).

194738449 is an equidigital number, since it uses as much as digits as its factorization.

194738449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 194738449 is about 13954.8718732921. The cubic root of 194738449 is about 579.6296178681.

The spelling of 194738449 in words is "one hundred ninety-four million, seven hundred thirty-eight thousand, four hundred forty-nine".