199244538 has 48 divisors (see below), whose sum is σ = 454559040. Its totient is φ = 62950272.

The previous prime is 199244503. The next prime is 199244599. The reversal of 199244538 is 835442991.

199244538 is a `hidden beast` number, since 1 + 99 + 24 + 4 + 538 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 199244493 and 199244502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44653 + ... + 48911.

It is an arithmetic number, because the mean of its divisors is an integer number (9469980).

Almost surely, 2^199244538 is an apocalyptic number.

199244538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 199244538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227279520).

199244538 is an abundant number, since it is smaller than the sum of its proper divisors (255314502).

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

199244538 is a wasteful number, since it uses less digits than its factorization.

199244538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403 (or 4400 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 199244538 is about 14115.4007382008. The cubic root of 199244538 is about 584.0662904828.

The spelling of 199244538 in words is "one hundred ninety-nine million, two hundred forty-four thousand, five hundred thirty-eight".