198029690525398 has 8 divisors (see below), whose sum is σ = 297138270267720. Its totient is φ = 98983600436160.

The previous prime is 198029690525353. The next prime is 198029690525411. The reversal of 198029690525398 is 893525096920891.

It is a happy number.

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

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, 15622405348 + ... + 15622418023.

It is an arithmetic number, because the mean of its divisors is an integer number (37142283783465).

Almost surely, 2^{198029690525398} is an apocalyptic number.

198029690525398 is a deficient number, since it is larger than the sum of its proper divisors (99108579742322).

198029690525398 is a wasteful number, since it uses less digits than its factorization.

198029690525398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31244826542.

The product of its (nonzero) digits is 755827200, while the sum is 76.

The spelling of 198029690525398 in words is "one hundred ninety-eight trillion, twenty-nine billion, six hundred ninety million, five hundred twenty-five thousand, three hundred ninety-eight".