198465541 has 2 divisors, whose sum is σ = 198465542. Its totient is φ = 198465540.

The previous prime is 198465529. The next prime is 198465559. The reversal of 198465541 is 145564891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197514916 + 950625 = 14054^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 198465541 - 2¹³ = 198457349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198465041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99232770 + 99232771.

It is an arithmetic number, because the mean of its divisors is an integer number (99232771).

Almost surely, 2^198465541 is an apocalyptic number.

It is an amenable number.

198465541 is a deficient number, since it is larger than the sum of its proper divisors (1).

198465541 is an equidigital number, since it uses as much as digits as its factorization.

198465541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 43.

The square root of 198465541 is about 14087.7798463775. The cubic root of 198465541 is about 583.3041112618.

The spelling of 198465541 in words is "one hundred ninety-eight million, four hundred sixty-five thousand, five hundred forty-one".