198024253939 has 2 divisors, whose sum is σ = 198024253940. Its totient is φ = 198024253938.

The previous prime is 198024253937. The next prime is 198024253943. The reversal of 198024253939 is 939352420891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198024253939 - 2¹ = 198024253937 is a prime.

Together with 198024253937, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 198024253939.

It is not a weakly prime, because it can be changed into another prime (198024253937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99012126969 + 99012126970.

It is an arithmetic number, because the mean of its divisors is an integer number (99012126970).

Almost surely, 2^198024253939 is an apocalyptic number.

198024253939 is a deficient number, since it is larger than the sum of its proper divisors (1).

198024253939 is an equidigital number, since it uses as much as digits as its factorization.

198024253939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 198024253939 in words is "one hundred ninety-eight billion, twenty-four million, two hundred fifty-three thousand, nine hundred thirty-nine".