198926545 has 8 divisors (see below), whose sum is σ = 238823424. Its totient is φ = 159066864.

The previous prime is 198926531. The next prime is 198926549. The reversal of 198926545 is 545629891.

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 198926545 - 2⁹ = 198926033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198926549) 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, 4272 + ... + 20398.

It is an arithmetic number, because the mean of its divisors is an integer number (29852928).

Almost surely, 2^198926545 is an apocalyptic number.

It is an amenable number.

198926545 is a deficient number, since it is larger than the sum of its proper divisors (39896879).

198926545 is a wasteful number, since it uses less digits than its factorization.

198926545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18599.

The product of its digits is 777600, while the sum is 49.

The square root of 198926545 is about 14104.1321959205. The cubic root of 198926545 is about 583.7554030194.

The spelling of 198926545 in words is "one hundred ninety-eight million, nine hundred twenty-six thousand, five hundred forty-five".