198639126353 has 8 divisors (see below), whose sum is σ = 200158179456. Its totient is φ = 197122752000.

The previous prime is 198639126311. The next prime is 198639126383. The reversal of 198639126353 is 353621936891.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 198639126353 - 2²⁶ = 198572017489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198639126383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520688 + ... + 817553.

It is an arithmetic number, because the mean of its divisors is an integer number (25019772432).

Almost surely, 2^198639126353 is an apocalyptic number.

It is an amenable number.

198639126353 is a deficient number, since it is larger than the sum of its proper divisors (1519053103).

198639126353 is a wasteful number, since it uses less digits than its factorization.

198639126353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339375.

The product of its digits is 6298560, while the sum is 56.

The spelling of 198639126353 in words is "one hundred ninety-eight billion, six hundred thirty-nine million, one hundred twenty-six thousand, three hundred fifty-three".