199458218980 has 24 divisors (see below), whose sum is σ = 433305787320. Its totient is φ = 77032139520.

The previous prime is 199458218941. The next prime is 199458219011. The reversal of 199458218980 is 89812854991.

199458218980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3570540516 + 195887678464 = 59754^2 + 442592^2 .

It is a super-2 number, since 2×199458218980² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171946161 + ... + 171947320.

It is an arithmetic number, because the mean of its divisors is an integer number (18054407805).

Almost surely, 2^199458218980 is an apocalyptic number.

199458218980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199458218980 is an abundant number, since it is smaller than the sum of its proper divisors (233847568340).

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

199458218980 is a wasteful number, since it uses less digits than its factorization.

199458218980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343893519 (or 343893517 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 64.

The spelling of 199458218980 in words is "one hundred ninety-nine billion, four hundred fifty-eight million, two hundred eighteen thousand, nine hundred eighty".