194549992207 has 2 divisors, whose sum is σ = 194549992208. Its totient is φ = 194549992206.

The previous prime is 194549992193. The next prime is 194549992223. The reversal of 194549992207 is 702299945491.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194549992207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194549992297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97274996103 + 97274996104.

It is an arithmetic number, because the mean of its divisors is an integer number (97274996104).

Almost surely, 2^194549992207 is an apocalyptic number.

194549992207 is a deficient number, since it is larger than the sum of its proper divisors (1).

194549992207 is an equidigital number, since it uses as much as digits as its factorization.

194549992207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 194549992207 in words is "one hundred ninety-four billion, five hundred forty-nine million, nine hundred ninety-two thousand, two hundred seven".