194649838463 has 2 divisors, whose sum is σ = 194649838464. Its totient is φ = 194649838462.

The previous prime is 194649838429. The next prime is 194649838501. The reversal of 194649838463 is 364838946491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194649838463 - 2¹⁰ = 194649837439 is a prime.

It is a super-2 number, since 2×194649838463² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194649838463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194649838363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97324919231 + 97324919232.

It is an arithmetic number, because the mean of its divisors is an integer number (97324919232).

Almost surely, 2^194649838463 is an apocalyptic number.

194649838463 is a deficient number, since it is larger than the sum of its proper divisors (1).

194649838463 is an equidigital number, since it uses as much as digits as its factorization.

194649838463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107495424, while the sum is 65.

The spelling of 194649838463 in words is "one hundred ninety-four billion, six hundred forty-nine million, eight hundred thirty-eight thousand, four hundred sixty-three".