194488463 has 4 divisors (see below), whose sum is σ = 209449128. Its totient is φ = 179527800.

The previous prime is 194488457. The next prime is 194488499. The reversal of 194488463 is 364884491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364884491 = 37 ⋅9861743.

It is a cyclic number.

It is not a de Polignac number, because 194488463 - 2¹⁴ = 194472079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194488403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7480313 + ... + 7480338.

It is an arithmetic number, because the mean of its divisors is an integer number (52362282).

Almost surely, 2^194488463 is an apocalyptic number.

194488463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

194488463 is a deficient number, since it is larger than the sum of its proper divisors (14960665).

194488463 is a wasteful number, since it uses less digits than its factorization.

194488463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14960664.

The product of its digits is 663552, while the sum is 47.

The square root of 194488463 is about 13945.9120533581. The cubic root of 194488463 is about 579.3814878984.

The spelling of 194488463 in words is "one hundred ninety-four million, four hundred eighty-eight thousand, four hundred sixty-three".