199536690 has 16 divisors (see below), whose sum is σ = 478888128. Its totient is φ = 53209776.

The previous prime is 199536683. The next prime is 199536691. The reversal of 199536690 is 96635991.

It is a super-2 number, since 2×199536690² = 79629781312312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199536691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325582 + ... + 3325641.

It is an arithmetic number, because the mean of its divisors is an integer number (29930508).

Almost surely, 2^199536690 is an apocalyptic number.

199536690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199536690 is an abundant number, since it is smaller than the sum of its proper divisors (279351438).

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

199536690 is a wasteful number, since it uses less digits than its factorization.

199536690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651233.

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 199536690 is about 14125.7456440359. The cubic root of 199536690 is about 584.3516229412.

The spelling of 199536690 in words is "one hundred ninety-nine million, five hundred thirty-six thousand, six hundred ninety".