2198538756 has 36 divisors (see below), whose sum is σ = 5614719292. Its totient is φ = 725289984.

The previous prime is 2198538721. The next prime is 2198538767. The reversal of 2198538756 is 6578358912.

It can be written as a sum of positive squares in 2 ways, for example, as 1625702400 + 572836356 = 40320^2 + 23934^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311305 + ... + 318288.

Almost surely, 2^2198538756 is an apocalyptic number.

It is an amenable number.

2198538756 is an abundant number, since it is smaller than the sum of its proper divisors (3416180536).

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

2198538756 is a wasteful number, since it uses less digits than its factorization.

2198538756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629700 (or 629695 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 2198538756 is about 46888.5780974429. The cubic root of 2198538756 is about 1300.3034313406.

The spelling of 2198538756 in words is "two billion, one hundred ninety-eight million, five hundred thirty-eight thousand, seven hundred fifty-six".