199013 has 4 divisors (see below), whose sum is σ = 201888. Its totient is φ = 196140.

The previous prime is 198997. The next prime is 199021. The reversal of 199013 is 310991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310991 = 307 ⋅1013.

It is a cyclic number.

It is not a de Polignac number, because 199013 - 2⁴ = 198997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (50472).

2¹⁹⁹⁰¹³ is an apocalyptic number.

It is an amenable number.

199013 is a deficient number, since it is larger than the sum of its proper divisors (2875).

199013 is an equidigital number, since it uses as much as digits as its factorization.

199013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 199013 is about 446.1087311407. The cubic root of 199013 is about 58.3839958961.

The spelling of 199013 in words is "one hundred ninety-nine thousand, thirteen".