2198642236 has 12 divisors (see below), whose sum is σ = 4397284528. Its totient is φ = 942275232.

The previous prime is 2198642219. The next prime is 2198642263. The reversal of 2198642236 is 6322468912.

2198642236 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2198642192 and 2198642201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39261441 + ... + 39261496.

Almost surely, 2^2198642236 is an apocalyptic number.

It is an amenable number.

2198642236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2198642236 is a wasteful number, since it uses less digits than its factorization.

2198642236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78522948 (or 78522946 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 2198642236 is about 46889.6815514885. The cubic root of 2198642236 is about 1300.3238317524.

The spelling of 2198642236 in words is "two billion, one hundred ninety-eight million, six hundred forty-two thousand, two hundred thirty-six".