198551433 has 8 divisors (see below), whose sum is σ = 276245568. Its totient is φ = 126612464.

The previous prime is 198551417. The next prime is 198551471. The reversal of 198551433 is 334155891.

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 198551433 - 2⁴ = 198551417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198551391 and 198551400.

It is not an unprimeable number, because it can be changed into a prime (198551033) 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, 1438710 + ... + 1438847.

It is an arithmetic number, because the mean of its divisors is an integer number (34530696).

Almost surely, 2^198551433 is an apocalyptic number.

It is an amenable number.

198551433 is a deficient number, since it is larger than the sum of its proper divisors (77694135).

198551433 is a wasteful number, since it uses less digits than its factorization.

198551433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877583.

The product of its digits is 64800, while the sum is 39.

The square root of 198551433 is about 14090.8279742533. The cubic root of 198551433 is about 583.3882466581.

The spelling of 198551433 in words is "one hundred ninety-eight million, five hundred fifty-one thousand, four hundred thirty-three".