198030013 has 4 divisors (see below), whose sum is σ = 198419580. Its totient is φ = 197640448.

The previous prime is 198029983. The next prime is 198030017. The reversal of 198030013 is 310030891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310030891 = 857 ⋅361763.

It can be written as a sum of positive squares in 2 ways, for example, as 103978809 + 94051204 = 10197^2 + 9698^2 .

It is a cyclic number.

It is not a de Polignac number, because 198030013 - 2⁵ = 198029981 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 198030013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198030017) 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, 194020 + ... + 195037.

It is an arithmetic number, because the mean of its divisors is an integer number (49604895).

Almost surely, 2^198030013 is an apocalyptic number.

It is an amenable number.

198030013 is a deficient number, since it is larger than the sum of its proper divisors (389567).

198030013 is an equidigital number, since it uses as much as digits as its factorization.

198030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389566.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 198030013 is about 14072.3137045761. The cubic root of 198030013 is about 582.8771163441.

It can be divided in two parts, 1980300 and 13, that multiplied together give a triangular number (25743900 = T₇₁₇₅).

The spelling of 198030013 in words is "one hundred ninety-eight million, thirty thousand, thirteen".