2198191436 has 24 divisors (see below), whose sum is σ = 4397509536. Its totient is φ = 941840640.

The previous prime is 2198191361. The next prime is 2198191447. The reversal of 2198191436 is 6341918912.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140906 + ... + 155726.

It is an arithmetic number, because the mean of its divisors is an integer number (183229564).

Almost surely, 2^2198191436 is an apocalyptic number.

It is an amenable number.

2198191436 is an abundant number, since it is smaller than the sum of its proper divisors (2199318100).

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

2198191436 is a wasteful number, since it uses less digits than its factorization.

2198191436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20129 (or 20127 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 2198191436 is about 46884.8742773189. The cubic root of 2198191436 is about 1300.2349547717.

The spelling of 2198191436 in words is "two billion, one hundred ninety-eight million, one hundred ninety-one thousand, four hundred thirty-six".