198920386 has 24 divisors (see below), whose sum is σ = 359907840. Its totient is φ = 80762616.

The previous prime is 198920377. The next prime is 198920411. The reversal of 198920386 is 683029891.

198920386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14626 + ... + 24733.

It is an arithmetic number, because the mean of its divisors is an integer number (14996160).

Almost surely, 2^198920386 is an apocalyptic number.

198920386 is a deficient number, since it is larger than the sum of its proper divisors (160987454).

198920386 is a wasteful number, since it uses less digits than its factorization.

198920386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39406 (or 39387 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 198920386 is about 14103.9138539627. The cubic root of 198920386 is about 583.7493783724.

The spelling of 198920386 in words is "one hundred ninety-eight million, nine hundred twenty thousand, three hundred eighty-six".