194549140459 has 2 divisors, whose sum is σ = 194549140460. Its totient is φ = 194549140458.

The previous prime is 194549140453. The next prime is 194549140501. The reversal of 194549140459 is 954041945491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194549140459 - 2⁹ = 194549139947 is a prime.

It is not a weakly prime, because it can be changed into another prime (194549140453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97274570229 + 97274570230.

It is an arithmetic number, because the mean of its divisors is an integer number (97274570230).

Almost surely, 2^194549140459 is an apocalyptic number.

194549140459 is a deficient number, since it is larger than the sum of its proper divisors (1).

194549140459 is an equidigital number, since it uses as much as digits as its factorization.

194549140459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 194549140459 in words is "one hundred ninety-four billion, five hundred forty-nine million, one hundred forty thousand, four hundred fifty-nine".