495198081 has 24 divisors (see below), whose sum is σ = 822005184. Its totient is φ = 281400480.

The previous prime is 495198079. The next prime is 495198089. The reversal of 495198081 is 180891594.

495198081 is a `hidden beast` number, since 495 + 1 + 9 + 80 + 81 = 666.

It is not a de Polignac number, because 495198081 - 2¹ = 495198079 is a prime.

It is a super-2 number, since 2×495198081² = 490442278852165122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (495198089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10311 + ... + 33116.

It is an arithmetic number, because the mean of its divisors is an integer number (34250216).

Almost surely, 2^495198081 is an apocalyptic number.

It is an amenable number.

495198081 is a deficient number, since it is larger than the sum of its proper divisors (326807103).

495198081 is a wasteful number, since it uses less digits than its factorization.

495198081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43621 (or 43618 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 495198081 is about 22253.0465554719. The cubic root of 495198081 is about 791.1514912216.

It can be divided in two parts, 49519 and 8081, that added together give a square (57600 = 240²).

The spelling of 495198081 in words is "four hundred ninety-five million, one hundred ninety-eight thousand, eighty-one".