198783145 has 8 divisors (see below), whose sum is σ = 260225280. Its totient is φ = 144569520.

The previous prime is 198783133. The next prime is 198783217. The reversal of 198783145 is 541387891.

It is a happy number.

198783145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 198783145 - 2⁵ = 198783113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198783095 and 198783104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1807065 + ... + 1807174.

It is an arithmetic number, because the mean of its divisors is an integer number (32528160).

Almost surely, 2^198783145 is an apocalyptic number.

It is an amenable number.

198783145 is a deficient number, since it is larger than the sum of its proper divisors (61442135).

198783145 is a wasteful number, since it uses less digits than its factorization.

198783145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614255.

The product of its digits is 241920, while the sum is 46.

The square root of 198783145 is about 14099.0476628743. The cubic root of 198783145 is about 583.6150988891.

The spelling of 198783145 in words is "one hundred ninety-eight million, seven hundred eighty-three thousand, one hundred forty-five".