2198454840 has 96 divisors (see below), whose sum is σ = 7279852320. Its totient is φ = 575188224.

The previous prime is 2198454827. The next prime is 2198454857. The reversal of 2198454840 is 484548912.

2198454840 is a `hidden beast` number, since 2 + 198 + 454 + 8 + 4 + 0 = 666.

It is a super-3 number, since 3×2198454840³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38532 + ... + 76691.

It is an arithmetic number, because the mean of its divisors is an integer number (75831795).

Almost surely, 2^2198454840 is an apocalyptic number.

2198454840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2198454840 is an abundant number, since it is smaller than the sum of its proper divisors (5081397480).

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

2198454840 is a wasteful number, since it uses less digits than its factorization.

2198454840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115293 (or 115286 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 2198454840 is about 46887.6832441101. The cubic root of 2198454840 is about 1300.2868873746.

The spelling of 2198454840 in words is "two billion, one hundred ninety-eight million, four hundred fifty-four thousand, eight hundred forty".