19834064198 has 8 divisors (see below), whose sum is σ = 32039642208. Its totient is φ = 9154183464.

The previous prime is 19834064197. The next prime is 19834064209. The reversal of 19834064198 is 89146043891.

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

It is a super-2 number, since 2×19834064198² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19834064197) 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, 381424286 + ... + 381424337.

It is an arithmetic number, because the mean of its divisors is an integer number (4004955276).

Almost surely, 2^19834064198 is an apocalyptic number.

19834064198 is a deficient number, since it is larger than the sum of its proper divisors (12205578010).

19834064198 is a wasteful number, since it uses less digits than its factorization.

19834064198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762848638.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 19834064198 in words is "nineteen billion, eight hundred thirty-four million, sixty-four thousand, one hundred ninety-eight".