194649838453 has 16 divisors (see below), whose sum is σ = 223101648000. Its totient is φ = 166359612672.

The previous prime is 194649838429. The next prime is 194649838463. The reversal of 194649838453 is 354838946491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194649838453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194649838463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6111153 + ... + 6142921.

It is an arithmetic number, because the mean of its divisors is an integer number (13943853000).

Almost surely, 2^194649838453 is an apocalyptic number.

It is an amenable number.

194649838453 is a deficient number, since it is larger than the sum of its proper divisors (28451809547).

194649838453 is a wasteful number, since it uses less digits than its factorization.

194649838453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34284.

The product of its digits is 89579520, while the sum is 64.

The spelling of 194649838453 in words is "one hundred ninety-four billion, six hundred forty-nine million, eight hundred thirty-eight thousand, four hundred fifty-three".