199020165 has 8 divisors (see below), whose sum is σ = 318432288. Its totient is φ = 106144080.

The previous prime is 199020131. The next prime is 199020169. The reversal of 199020165 is 561020991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199020165 - 2¹¹ = 199018117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199020169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6633991 + ... + 6634020.

It is an arithmetic number, because the mean of its divisors is an integer number (39804036).

Almost surely, 2^199020165 is an apocalyptic number.

199020165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199020165 is a deficient number, since it is larger than the sum of its proper divisors (119412123).

199020165 is a wasteful number, since it uses less digits than its factorization.

199020165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13268019.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 199020165 is about 14107.4506910356. The cubic root of 199020165 is about 583.8469654763.

It can be divided in two parts, 1990 and 20165, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 199020165 in words is "one hundred ninety-nine million, twenty thousand, one hundred sixty-five".