198465959 has 2 divisors, whose sum is σ = 198465960. Its totient is φ = 198465958.

The previous prime is 198465929. The next prime is 198465991. The reversal of 198465959 is 959564891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198465959 - 2¹² = 198461863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198465929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99232979 + 99232980.

It is an arithmetic number, because the mean of its divisors is an integer number (99232980).

Almost surely, 2^198465959 is an apocalyptic number.

198465959 is a deficient number, since it is larger than the sum of its proper divisors (1).

198465959 is an equidigital number, since it uses as much as digits as its factorization.

198465959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 56.

The square root of 198465959 is about 14087.7946819224. The cubic root of 198465959 is about 583.3045207719.

The spelling of 198465959 in words is "one hundred ninety-eight million, four hundred sixty-five thousand, nine hundred fifty-nine".