198791365 has 16 divisors (see below), whose sum is σ = 244747008. Its totient is φ = 154921536.

The previous prime is 198791347. The next prime is 198791371. The reversal of 198791365 is 563197891.

198791365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 198791365 - 2¹¹ = 198789317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98547 + ... + 100543.

It is an arithmetic number, because the mean of its divisors is an integer number (15296688).

Almost surely, 2^198791365 is an apocalyptic number.

It is an amenable number.

198791365 is a deficient number, since it is larger than the sum of its proper divisors (45955643).

198791365 is a wasteful number, since it uses less digits than its factorization.

198791365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508.

The product of its digits is 408240, while the sum is 49.

The square root of 198791365 is about 14099.3391689114. The cubic root of 198791365 is about 583.6231432499.

The spelling of 198791365 in words is "one hundred ninety-eight million, seven hundred ninety-one thousand, three hundred sixty-five".