2169321198 has 64 divisors (see below), whose sum is σ = 4807987200. Its totient is φ = 647019360.

The previous prime is 2169321113. The next prime is 2169321239. The reversal of 2169321198 is 8911239612.

2169321198 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2935113 + ... + 2935851.

It is an arithmetic number, because the mean of its divisors is an integer number (75124800).

Almost surely, 2^2169321198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169321198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403993600).

2169321198 is an abundant number, since it is smaller than the sum of its proper divisors (2638666002).

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

2169321198 is a wasteful number, since it uses less digits than its factorization.

2169321198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397.

The product of its digits is 46656, while the sum is 42.

The square root of 2169321198 is about 46575.9723247943. The cubic root of 2169321198 is about 1294.5175820212.

It can be divided in two parts, 216932 and 1198, that added together give a triangular number (218130 = T₆₆₀).

The spelling of 2169321198 in words is "two billion, one hundred sixty-nine million, three hundred twenty-one thousand, one hundred ninety-eight".