194961359 has 2 divisors, whose sum is σ = 194961360. Its totient is φ = 194961358.

The previous prime is 194961341. The next prime is 194961373. The reversal of 194961359 is 953169491.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (953169491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194961359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194961329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97480679 + 97480680.

It is an arithmetic number, because the mean of its divisors is an integer number (97480680).

Almost surely, 2^194961359 is an apocalyptic number.

194961359 is a deficient number, since it is larger than the sum of its proper divisors (1).

194961359 is an equidigital number, since it uses as much as digits as its factorization.

194961359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 47.

The square root of 194961359 is about 13962.8564054781. The cubic root of 194961359 is about 579.8506938314.

The spelling of 194961359 in words is "one hundred ninety-four million, nine hundred sixty-one thousand, three hundred fifty-nine".