245118899 has 2 divisors, whose sum is σ = 245118900. Its totient is φ = 245118898.

The previous prime is 245118859. The next prime is 245118901. The reversal of 245118899 is 998811542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245118899 is a prime.

It is a Sophie Germain prime.

Together with 245118901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245118859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122559449 + 122559450.

It is an arithmetic number, because the mean of its divisors is an integer number (122559450).

Almost surely, 2^245118899 is an apocalyptic number.

245118899 is a deficient number, since it is larger than the sum of its proper divisors (1).

245118899 is an equidigital number, since it uses as much as digits as its factorization.

245118899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 47.

The square root of 245118899 is about 15656.2734710403. The cubic root of 245118899 is about 625.8336812797.

The spelling of 245118899 in words is "two hundred forty-five million, one hundred eighteen thousand, eight hundred ninety-nine".