2198709612 has 72 divisors (see below), whose sum is σ = 6075315792. Its totient is φ = 664934400.

The previous prime is 2198709607. The next prime is 2198709631. The reversal of 2198709612 is 2169078912.

2198709612 is a `hidden beast` number, since 21 + 9 + 8 + 7 + 0 + 9 + 612 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200988 + ... + 211644.

It is an arithmetic number, because the mean of its divisors is an integer number (84379386).

Almost surely, 2^2198709612 is an apocalyptic number.

2198709612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2198709612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3037657896).

2198709612 is an abundant number, since it is smaller than the sum of its proper divisors (3876606180).

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

2198709612 is a wasteful number, since it uses less digits than its factorization.

2198709612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11199 (or 11194 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 2198709612 is about 46890.3999982939. The cubic root of 2198709612 is about 1300.3371141504.

The spelling of 2198709612 in words is "two billion, one hundred ninety-eight million, seven hundred nine thousand, six hundred twelve".