198415011844 has 27 divisors (see below), whose sum is σ = 403928969493. Its totient is φ = 85032332448.

The previous prime is 198415011833. The next prime is 198415011863. The reversal of 198415011844 is 448110514891.

The square root of 198415011844 is 445438.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 177991172100 + 20423839744 = 421890^2 + 142912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198415011794 and 198415011803.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6220224 + ... + 6252040.

Almost surely, 2^198415011844 is an apocalyptic number.

198415011844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

198415011844 is the 445438-th square number.

It is an amenable number.

198415011844 is an abundant number, since it is smaller than the sum of its proper divisors (205513957649).

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

198415011844 is an frugal number, since it uses more digits than its factorization.

198415011844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63652 (or 31826 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 46.

The spelling of 198415011844 in words is "one hundred ninety-eight billion, four hundred fifteen million, eleven thousand, eight hundred forty-four".