198120157363 has 4 divisors (see below), whose sum is σ = 198137040448. Its totient is φ = 198103274280.

The previous prime is 198120157343. The next prime is 198120157379. The reversal of 198120157363 is 363751021891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363751021891 = 15641 ⋅23256251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198120157363 is a prime.

It is a super-2 number, since 2×198120157363² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198120157343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8423928 + ... + 8447413.

It is an arithmetic number, because the mean of its divisors is an integer number (49534260112).

Almost surely, 2^198120157363 is an apocalyptic number.

198120157363 is a deficient number, since it is larger than the sum of its proper divisors (16883085).

198120157363 is a wasteful number, since it uses less digits than its factorization.

198120157363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16883084.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 198120157363 in words is "one hundred ninety-eight billion, one hundred twenty million, one hundred fifty-seven thousand, three hundred sixty-three".