863800198 has 4 divisors (see below), whose sum is σ = 1295700300. Its totient is φ = 431900098.

The previous prime is 863800183. The next prime is 863800219. The reversal of 863800198 is 891008368.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215950048 + ... + 215950051.

It is an arithmetic number, because the mean of its divisors is an integer number (323925075).

Almost surely, 2^863800198 is an apocalyptic number.

863800198 is a deficient number, since it is larger than the sum of its proper divisors (431900102).

863800198 is a wasteful number, since it uses less digits than its factorization.

863800198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431900101.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 863800198 is about 29390.4780158472. The cubic root of 863800198 is about 952.3672074873.

The spelling of 863800198 in words is "eight hundred sixty-three million, eight hundred thousand, one hundred ninety-eight".