198367913 has 4 divisors (see below), whose sum is σ = 201619908. Its totient is φ = 195115920.

The previous prime is 198367907. The next prime is 198367921. The reversal of 198367913 is 319763891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90478144 + 107889769 = 9512^2 + 10387^2 .

It is a cyclic number.

It is not a de Polignac number, because 198367913 - 2¹⁸ = 198105769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198367933) 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, 1625906 + ... + 1626027.

It is an arithmetic number, because the mean of its divisors is an integer number (50404977).

Almost surely, 2^198367913 is an apocalyptic number.

It is an amenable number.

198367913 is a deficient number, since it is larger than the sum of its proper divisors (3251995).

198367913 is an equidigital number, since it uses as much as digits as its factorization.

198367913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251994.

The product of its digits is 244944, while the sum is 47.

The square root of 198367913 is about 14084.3144313097. The cubic root of 198367913 is about 583.2084504001.

It can be divided in two parts, 1983 and 67913, that added together give a palindrome (69896).

The spelling of 198367913 in words is "one hundred ninety-eight million, three hundred sixty-seven thousand, nine hundred thirteen".