198201450838 has 12 divisors (see below), whose sum is σ = 304376976828. Its totient is φ = 96796055580.

The previous prime is 198201450827. The next prime is 198201450877. The reversal of 198201450838 is 838054102891.

It is a happy number.

It is a super-2 number, since 2×198201450838² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198201450791 and 198201450800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26794768 + ... + 26802163.

It is an arithmetic number, because the mean of its divisors is an integer number (25364748069).

Almost surely, 2^198201450838 is an apocalyptic number.

198201450838 is a deficient number, since it is larger than the sum of its proper divisors (106175525990).

198201450838 is an equidigital number, since it uses as much as digits as its factorization.

198201450838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53597019 (or 53596976 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 198201450838 in words is "one hundred ninety-eight billion, two hundred one million, four hundred fifty thousand, eight hundred thirty-eight".