199364550 has 192 divisors, whose sum is σ = 632959488. Its totient is φ = 40320000.

The previous prime is 199364537. The next prime is 199364551. The reversal of 199364550 is 55463991.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199364551) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 473340 + ... + 473760.

It is an arithmetic number, because the mean of its divisors is an integer number (3296664).

Almost surely, 2^199364550 is an apocalyptic number.

199364550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 199364550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316479744).

199364550 is an abundant number, since it is smaller than the sum of its proper divisors (433594938).

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

199364550 is a wasteful number, since it uses less digits than its factorization.

199364550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 199364550 is about 14119.6511996579. The cubic root of 199364550 is about 584.1835348424.

The spelling of 199364550 in words is "one hundred ninety-nine million, three hundred sixty-four thousand, five hundred fifty".