2198654920 has 128 divisors (see below), whose sum is σ = 6492441600. Its totient is φ = 649209600.

The previous prime is 2198654891. The next prime is 2198654957. The reversal of 2198654920 is 294568912.

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, 39735 + ... + 77305.

It is an arithmetic number, because the mean of its divisors is an integer number (50722200).

Almost surely, 2^2198654920 is an apocalyptic number.

2198654920 is a gapful number since it is divisible by the number (20) 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 2198654920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3246220800).

2198654920 is an abundant number, since it is smaller than the sum of its proper divisors (4293786680).

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

2198654920 is a wasteful number, since it uses less digits than its factorization.

2198654920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37619 (or 37615 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 2198654920 is about 46889.8168049311. The cubic root of 2198654920 is about 1300.3263322768.

It can be divided in two parts, 219865 and 4920, that added together give a triangular number (224785 = T₆₇₀).

The spelling of 2198654920 in words is "two billion, one hundred ninety-eight million, six hundred fifty-four thousand, nine hundred twenty".