2188630198 has 4 divisors (see below), whose sum is σ = 3282945300. Its totient is φ = 1094315098.

The previous prime is 2188630189. The next prime is 2188630207. The reversal of 2188630198 is 8910368812.

2188630198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (2188630189) and next prime (2188630207).

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, 547157548 + ... + 547157551.

It is an arithmetic number, because the mean of its divisors is an integer number (820736325).

Almost surely, 2^2188630198 is an apocalyptic number.

2188630198 is a deficient number, since it is larger than the sum of its proper divisors (1094315102).

2188630198 is a wasteful number, since it uses less digits than its factorization.

2188630198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094315101.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 2188630198 is about 46782.7980993014. The cubic root of 2188630198 is about 1298.3470506458.

The spelling of 2188630198 in words is "two billion, one hundred eighty-eight million, six hundred thirty thousand, one hundred ninety-eight".