198121432337 has 8 divisors (see below), whose sum is σ = 211777735680. Its totient is φ = 184885323040.

The previous prime is 198121432331. The next prime is 198121432363. The reversal of 198121432337 is 733234121891.

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 198121432337 - 2¹⁸ = 198121170193 is a prime.

It is a super-3 number, since 3×198121432337³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198121432331) 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, 105047537 + ... + 105049422.

It is an arithmetic number, because the mean of its divisors is an integer number (26472216960).

Almost surely, 2^198121432337 is an apocalyptic number.

It is an amenable number.

198121432337 is a deficient number, since it is larger than the sum of its proper divisors (13656303343).

198121432337 is a wasteful number, since it uses less digits than its factorization.

198121432337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210097023.

The product of its digits is 217728, while the sum is 44.

The spelling of 198121432337 in words is "one hundred ninety-eight billion, one hundred twenty-one million, four hundred thirty-two thousand, three hundred thirty-seven".