194649838454 has 8 divisors (see below), whose sum is σ = 291983809320. Its totient is φ = 97321902016.

The previous prime is 194649838429. The next prime is 194649838463. The reversal of 194649838454 is 454838946491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×194649838454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427084 + ... + 1557519.

It is an arithmetic number, because the mean of its divisors is an integer number (36497976165).

Almost surely, 2^194649838454 is an apocalyptic number.

194649838454 is a deficient number, since it is larger than the sum of its proper divisors (97333970866).

194649838454 is a wasteful number, since it uses less digits than its factorization.

194649838454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017214.

The product of its digits is 119439360, while the sum is 65.

The spelling of 194649838454 in words is "one hundred ninety-four billion, six hundred forty-nine million, eight hundred thirty-eight thousand, four hundred fifty-four".